Market value history and modeled trend
12-month change per source
| Provider | Start | End | Change |
|---|---|---|---|
| openai | 2025-09-01 ($35.00) | 2026-09-20 ($29.99) | -14.31% |
| gemini | 2025-09-01 ($68.97) | 2026-09-20 ($54.99) | -20.27% |
Underlying data tables
openai
| Date | Type | Price | Listing/source | Notes |
|---|---|---|---|---|
| 2025-09-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2025-10-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2025-11-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2025-12-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-01-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-02-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-03-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-04-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-05-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-06-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-07-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-08-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-09-01 | modeled estimate | $35.00 | Acer Black LCD Computer Monitor with Power Adapter | Current anchor is the rounded median of four normal-channel used black LCD monitor asks; series is flat because no qualifying dated historical observations were established. |
| 2026-09-20 | active listing | $29.99 | Dell E1910HC 19-inch LCD Monitor, Black, with Power and VGA Cables | Dell E1910HC 19-inch VGA LCD variant; seller states tested and working. |
| 2026-09-20 | active listing | $30.00 | Acer Black LCD Computer Monitor with Power Adapter | Acer flat-panel variant with unspecified size and model; listed with normal wear. |
| 2026-09-20 | active listing | $39.99 | Dell E193FPc 19-inch Black LCD Monitor with Tilt Stand | Dell E193FPc 19-inch VGA LCD variant. |
| 2026-09-20 | active listing | $79.99 | Used Dell 1907FPC 19-inch Black LCD Flat-Panel Monitor | Dell 1907FPC 19-inch LCD variant with stand and cables; enterprise reseller ask retained but not an outlier. |
anthropic
| Date | Type | Price | Listing/source | Notes |
|---|---|---|---|---|
| No accepted points. | ||||
gemini
| Date | Type | Price | Listing/source | Notes |
|---|---|---|---|---|
| 2025-09-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2025-10-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2025-11-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2025-12-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-01-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-02-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-03-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-04-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-05-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-06-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-07-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-08-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-09-01 | modeled estimate | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Median of comparable standard black flat-panel LCD/LED computer monitor asks ($54.99, $68.97, $90.00); flat projection applied due to absent historical series evidence. |
| 2026-09-20 | active listing | $54.99 | Dell P2219H 21.5" Full HD LED LCD IPS Monitor - Used | Representative comparable: Dell P2219H 21.5-inch 1080p LED LCD IPS flat-panel computer monitor in black housing. |
| 2026-09-20 | active listing | $68.97 | Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less | Representative comparable: Dell E2225H 22-inch 1080p LED flat-panel computer monitor in black housing. |
| 2026-09-20 | active listing | $90.00 | Dell P2225H 21.5" Full HD IPS LED Monitor Black - Adorama | Representative comparable: Dell P2225H 21.5-inch 1080p IPS LED flat-panel computer monitor in black housing. |
Sources
- Acer Black LCD Computer Monitor with Power Adapter
- Dell E1910HC 19-inch LCD Monitor, Black, with Power and VGA Cables
- Dell E193FPc 19-inch Black LCD Monitor with Tilt Stand
- Used Dell 1907FPC 19-inch Black LCD Flat-Panel Monitor
- Dell E2225H 22" Widescreen Full HD LED Monitor Black - Tech For Less
- Dell P2219H 21.5" Full HD LED LCD IPS Monitor - Used
- Dell P2225H 21.5" Full HD IPS LED Monitor Black - Adorama
Notes
- Active listings and historical observations are source-grounded. Dashed monthly values are provider-modeled estimates, not observed listings or transactions.
- Modeled estimates cover the current month and previous 12 months and require a grounded observation from the same provider.
- Prices are USD per single item and exclude shipping and tax.
- Identity is a broad, visually identified black flat-panel monitor with unknown brand, size, inputs, and model; representative used LCD variants are preserved in source titles and notes.
- The observed asks produced an initial median of USD 34.995, rounded to USD 35.00; none fell below one-third or above three times that median.
- Comparable listings generally indicate working or ordinary used condition; the pictured unit's untested status may warrant a lower realized ask, but no unsupported adjustment was modeled.
- openai validation accepted 17 of 17 raw points.
- Requested identity is unresolved: manufacturer 'Generic', model 'Computer Monitor', untested condition, with screen size, panel spec, and inputs not visible; no recognized brand/model family could be inferred without inventing a generation or configuration.
- Excluded per rules: eBay and Staples/Best Buy/Amazon/Walmart category and search pages, Alibaba wholesale showroom (undisclosed quantity), Discount Computer Depot mixed lots, Discount Electronics mixed-model scratch-and-dent (undisclosed model), and an out-of-stock GBP-denominated eBay item page.
- PCLiquidations product pages surfaced for representative 23.8-24 inch Dell variants (P2419H, P2419HC, U2419H) were not accepted because the grounded snippets showed either suggested-item price clusters or grade-dependent ranges (e.g., a range rather than one visible single-unit ask), so no per-single-item USD price excluding shipping and tax could be verified.
- Search budget used: three current-listing queries. The optional fourth (historical) query was left unused because no direct archive or price-history source for this identity was identified.
- Zero accepted comparables means confidence is not merely low but indeterminate; a usable valuation requires the monitor's brand, model, screen size, and a power-on test to confirm 'used/working' rather than 'untested'.
- anthropic validation accepted 0 of 13 raw points; rejected invalid_modeled_series=13.
- Researched representative standard desktop 21.5-22 inch black flat-panel LCD/LED computer monitors given generic specifications.
- No historical price archive source was identified; baseline anchor of $68.97 held constant across all 13 modeled intervals.
- gemini validation accepted 16 of 16 raw points.