On-field 85th percentile, card market 84th.
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Every figure in this table is an asking price: the average of what sellers currently want across live eBay listings, base autos only. It is not what the card last sold for — where we have a verified sold comp it is shown above, tagged sold. Numbered parallels, refractor colors, superfractors, and printing plates are excluded so the numbers stay apples-to-apples across product lines. Refreshed multiple times per day.
| Card type | Avg asking | Asking range | Raw listings | PSA 10 asking |
|---|---|---|---|---|
| Bowman Chrome 1st Bowman Auto | $119.66 | $95.00–$140.00 | 8 | — |
| Topps Pro Debut Auto | $149.99 | $149.99–$149.99 | 1 | — |
Higher = better. 50th is league median, 90th+ is elite. The orange Card Market bar shows where the price ranks — not whether it’s a good buy.
As of September 19, 2026, Prospect Card Radar rates Ryan Sloan’s 1st Bowman Chrome auto FAIRLY PRICED. His arm ranks in the 85th percentile of 124 tracked prospect pitchers (3.25 FIP over 101.1 innings at Double-A), while his card market ranks in the 84th percentile, within the 1-point band Prospect Card Radar treats as in step. Last sold value is about $86 raw and $238 in a PSA 10 (2024 Bowman Draft Chrome Prospect Autograph #CPA-RS). 8 base 1st autos are live on eBay, asking $95 to $140 (average $122). Prospect Card Radar reaches this by ranking every tracked prospect’s on-field production against the price of his 1st Bowman Chrome auto in the same pool of 124 prospect pitchers, and refreshing both daily.
As of September 19, 2026, Prospect Card Radar rates Ryan Sloan’s 1st Bowman Chrome auto FAIRLY PRICED. The gap between his on-field percentile (85th) and his card market percentile (84th) is 1 points in favor of production. Performance and price are close enough that neither side has a clear edge.
As of September 19, 2026, the sold value for a raw Ryan Sloan base 1st Bowman Chrome autograph is about $86, and about $238 graded PSA 10. This is a sold figure, not an asking price. Prospect Card Radar tracks it daily alongside live eBay asks so you can see the spread between what sellers want and what cards actually trade for.
The current Bowman Chrome 1st Bowman autograph average for Ryan Sloan is $122 based on live eBay listings tracked by Prospect Card Radar. Numbered parallels and refractor colors are excluded so the figure reflects base autos only. Data refreshes multiple times per day.
Current Bowman Chrome 1st auto listings for Ryan Sloan range from $95 to $140 based on live eBay data across 8 listings. The wider the spread, the more variation in condition and seller pricing.
Ryan Sloan is ranked #7 in the Prospect Card Radar composite top 300, which blends MLB Pipeline, Fangraphs, and Baseball America rankings. Individual source ranks are listed at the top of his prospect page.
Ryan Sloan plays P in the Mariners organization.
Prospect Card Radar tracks live Ryan Sloan card listings, recently delisted cards, real sold values, and 30-day price history at https://prospectcardradar.com/prospects/ryan-sloan. Listings update continuously throughout the day.
Prospect Card Radar pulls live active listings from eBay, filters to base 1st autographs (numbered parallels, refractor colors, superfractors, and printing plates excluded), and computes a rolling average. Raw and PSA 10 averages are tracked separately. Methodology details at https://prospectcardradar.com/methodology.
Answers are generated from Prospect Card Radar’s own daily data and carry the date they were computed. Percentiles compare this prospect against the tracked pool; sold values come from SportsCardsPro; asking prices come from live eBay listings.
