Meijer has E85 at $2.15 today. It's been there for a few days.
They have maintained their 50 cent spread to regular even as prices have plunged over the last month.
As prices drop, E85 actually becomes a much better deal as long as Meijer maintains the 50 cent spread.
I reran my spreadsheet, and it says that E85 should cost anywhere from $1.95 to $2.10, so the amount Meijer is gouging us is also much less.
I think that I'm going to run another tank of E10, this time premium. Then back to mixing E85.