Yep, it sounds like you can get just the flex fuel module for $375. I bought a flex fuel sensor for $35 a while back so there's more money you can save. There are definitely cheaper ways to get the ethanol content signal to your ECU. Cobb's solution to add a new fpr and charge a pretty penny for it seems pretty wonky to me as well. With all that said.....yeah, um...I went ahead and ordered the Cobb kit anyway. In the end I decided I just wanted to have Cobb's full kit the way they designed and tested it. They've made the install pretty easy so that should be a breeze but I wanted to make sure I can get support from Cobb if I have issues at any point.
Sure am looking forward to being able to just stop at whatever gas station I feel like and fill up rather than having to plan every trip I make, budgeting every drop, and making the trip down to Orem whenever I run out. I'm sure I'll still run on e85 as much as possible (well it seems like e70 is about the best I've ever been able to get down there) but I'm sure I'll drive my LGT a lot more not having to worry about it if I don't want to.