User blog comment:Mooroo7/The most expensive habitat ever/@comment-5549076-20130203005815/@comment-5039776-20130203010648

You can increase the chances by not playing consecutively. Buy a crate and do not buy a second chance one. Go out and come back in and your chances for th habitat increase from 1 in 50 to 1 in 33.

See the warnings in New Year Crates.

Anyway, I bet they go on sale sometime soon.