Check what sneakers resell for

Here's how to check sneaker resale prices with ChatGPT or Claude: what a pair sells for on StockX in your size, and whether the price is going up or down.

1. 1

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2. 2

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   ChatGPTClaudeMCP & CLI

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   @Firecrawl Use Alexandria to check what Air Jordan 4 Black Cat sneakers are selling for on StockX in a men's size 10, and whether the price is going up or down.

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3. 3

   What came back

   Claude Code (Claude Opus 5.5) sent back, word for word:

   Size 10 of the current Air Jordan 4 Black Cat (the 2025 retro) sells for about $310–320 on StockX, and the price has been flat for the past week, with a small dip in the last few hours.

   Jordan 4 Retro Black Cat (2025): men's size 10

   Retail was $220 and it released Nov 28, 2025.

   	Price
   Last sale	$290
   Lowest ask (standard shipping)	$317 ($339 with fees)
   Lowest ask (express shipping)	$373–376
   Highest bid	$280
   90-day average, size 10	$306 (865 sales)
   Sales in the last 72 hours	13

   Is it going up or down? It's holding steady, not moving much either way.

   • I looked at the last 50 size 10 sales (Oct 13–20). Standard-shipping sales were almost all between $312 and $319 the whole week. The occasional $380–395 sales were express orders, where buyers pay extra for faster shipping, so they don't show a price change.
   • The two most recent sales were $310 and then $290. That's a slight soft patch, but there have been one-off sales around $272–280 before, so it isn't a clear downtrend yet.
   • Across all sizes, the 90-day average ($315) is a bit above the 12-month average ($302). Prices firmed up over the year and have levelled off since.
   • In practice, a bid around $290–300 might get filled, and buying now costs about $317 before fees.

   If you meant the original 2020 release

   This one is much pricier, sells rarely, and is trending down. Recent size 10 sales were $742 in May, roughly $526–706 from July to September, then $595 on Oct 5 and $368 on Oct 14. The lowest ask is $632 and the highest bid is $367. Only 6 pairs sold in the last 90 days, so each sale moves the price a lot.

   All numbers are StockX US prices in USD as of Oct 20, 2026. The sales history only goes back about a week, so the longer-term view relies on StockX's 90-day and 12-month averages. Firecrawl hit its rate limit once during the lookup, which caused a short delay but didn't affect the data.

   Sources usedStockXOct 20, 2026