Ending today at 10 pm ET, Best Buy via eBay offers a $100 Steam Wallet Card for $100. Coupon code "C20FLASH" cuts it to $80. With free shipping, that's tied with our expired mention from two days ago as the best Steam credit deal we've ever seen. (It's also the lowest total price we could find for a $100 credit today by $18.)

The coupon can be used once per PayPal account within a single transaction (or cart), while supplies last.