I poked around a bit online and suspect that both companies involved are already out of business. They probably make up a batch of this swill, sell it to the convenience stores, and then fold up shop and make themselves scarce.
I think that rebates are not going to be very helpful to the folks who are likely to buy this kind of "oil". If you only have a few bucks in your pocket, how are you going to fork out more than you have for the good stuff with the idea of getting some of your money back in 6 weeks or whatever?
Honestly, they would be much better off using most any normally used oil than this garbage. Go to a transfer station and ask somebody about to dump out 5 quarts of used M1 if you can have it, instead!