Thanks for pointing this out.
Seems like Etherpic(
https://bitcointalk.org/index.php?action=profile;u=1802918) is the owner of Bitproducts.us, which is an obvious scam site.
It's not even autobuy. It's their own site, that they are selling shady products from. Not only are they selling merits, they are also selling bitcointalk accounts, ebay & amazon gift cards, bitmain coupons on extremely high discounts.
If you buy anything from them, including bitcointalk merits, either the product you receive is carded/fraudulent/hacked, or more likely they will just take your money and not deliver any goods. Avoid buying merits in general since it's against the rules, and also avoid using this site.