At the moment, we are only selling it in a 200L drum, but I am sure we will be able to sell smaller quantities if you bring your own drum for us to fill up.
As for dyno rates, yes there is no difference in price (that goes for 98 octane, tol/98, E85, C16 etc, its always the same rate). If you want an estimate on a tune, just PM me. I might even throw in some free e85!
I answered this in a prev post, just wanted to say I would definitely suggest a power run if you change fuel brand. Better to be same! If you buy a 200L e85 from us, I will throw in the power run to make sure your tune is safe.