Newegg via eBay has Gigabyte and Zotac GTX 1660 Ti graphics cards for $270.59 and $270.58, respectively, but with an extra 15% off when you add it to your cart, totaling ~$230. Targeted eBay users also get 13% eBay Bucks when checking out with the mobile app (~$29.30).
Gigabyte: https://www.ebay.com/itm/GIGABYTE…2978
Zotac: https://www.ebay.com/itm/ZOTAC-GA…3077114110