Those are all good points! We are trying to build a marketplace for large GPU providers to plugin their hardware. This will drive GPU costs to a market price.
We are experimenting with pricing and if you want to rent for a whole month our price will be cheaper than that, email us. Just thinking about efficient utilization, you might end up paying less if you don't have 24/7h jobs running.
At the same time, we are building software stack to utilize these hardware efficiently for Deep Learning applications. We need those resources for offering higher level ML products.