Specialized hides seem like a huge rip off. Go to your local dollar store
and look around. Same with wal-mart and target. There are
some cheap water bowls that also double well as hides (they are less than two bucks at targets). There are also slightly larger bowls for dogs that also work great for hides for females in the 800-1700g range. So that in one end and a cat litter box on the other end is a perfect set up.

Bottoms of milk bottoms painted black also work.