There aren't any cutting edge morphs in your price range, but a Pastel or spider female would be your best bet as anything you pair them with looks great.

You want to get a female first because it takes longer for them to get up to breeding size/age. No if you don't have a male you aren't going to get susprise eggs.

Here is a website that you might find interesting.

I am going to give you 2 links. The first is a list of morphs, and the second is a calculator to find out what you would get if you paired 2 snakes together.

http://www.worldofballpythons.com/morphs/

http://www.worldofballpythons.com/wizard/