shovel: Thanks for the link, although it also seems like the same price as at change2e85.com.
kenix: Thanks, I wasn't sure if that would work or not. Sounds like it's worth a try at least. I did the math and to get close to e-30 I should be using 1 gallon of e-85 per 2 gallons of e-10, so I'll give it a shot next time I'm at the pump.