Thanks for the input, you're right, maybe a fixed price is better. The idea currently is that the quoted price is an upper limit on the rate you pay and the final rate depends on what the GPU provider inputs, which will normally result in a lower rate than the upper bound. At the moment we have upper bounds if you want to be included in on-demand input, and also depending on the service you provide (security, network etc.). We determine pricing with partners 1-on-1 a the moment.

I would focus on offering a pricing model that entices people to want to pay.

I've found that usually this involves something extremely simple and easy to understand, with clear up front numbers.

Thanks for the answer, probably a good idea to include some version of this in the footnote.