Check out the areas you can position yourself for free & determine if there are cheap properties that meet your (whatever it is level) cheap threshold. Those are the places I would pick
Asking an open-ended question like what is the cheapest is a bit silly (IMO) & as a generic comment, not necessarily directed towards the OP. What is cheap? How much to get there? Etc, etc, etc. With no details, a bit hard to provide any valid input.
Cheers.