Blood pythons, all the way.

But, if you're looking for a ball... are you talking baby or juvie or adult? You could probably find a hatchling male spider for $200, probably not an adult.

Pastels are cool, but they fade out so much. If I were to get a pastel, I'd get a super bright hatchling so that even if it did fade out, it would be a nice-looking adult; such as a NERD lemon pastel. However, that may cost you a bit over $200.