Use your Discover Card at checkout and pay for a portion of the order with Discover Cash Back points and receive $10 off any order of $50 or more. Some people have reported that this works even if you have used the offer before. Works with gift cards as well. So if you have Discover Cash Back Points, then you should take advantage of this offer now before it is gone. Expires 4/10/2020. You can get the offer here.