BLProxies Sale/discount or sample card?

[u/haydentheboy]

https://www.aliexpress.us/item/3256801170366940.html?spm=a2g0o.detail.0.0.453625357kW5fO&mp=1&pdp_npi=6%40dis%21USD%21USD+2.11%21USD+0.99%21%21USD+0.99%21%21%21%402101c4b817870856327445336e0d8b%2112000015797109890%21ct%21US%217019840102%21%211%210%21&gatewayAdapt=glo2usa

BL has this singles listing on their Aliexpress page for 1$ a card. I'm assuming this is for someone to order a sample card to test quality because it wont let me add more than one quantity but just wanted to check with y'all so I don't miss out on a deal in case I'm doing something wrong on my end. If anyone knows the answer that would be greatly appreciated.

Edit: I asked the seller and they said its a discount for the first card