Racing Gas E100

[AZCanna]

So I'm out for a drive today (not in the Boxster) and I stop for gas at a station not far from my house but in a direction I rarely travel and I notice that they have an E100 pump. This was news to me as I've been doing major searches for a station that even had 93 as 91 is seemingly the best I could do.

No posted prices, but the person who used the pump last left the receipt which read $7.09/gallon...they only bought .83 gallons for just over $5. I currently have just about 1/2 tank in the Boxster now, but will probably head down there tomorrow to fill the tank. Obviously not with 8gal of E100, but 2gal with the rest 91 should give me the ratio I'm looking for.

Good idea? Bad idea? Waste of time and money? I'm sure most of you would know better than I do. Thx.