I'd go with a female, plenty in your price range....

Albino(possibly)
Hypo
Cinnamon
Black Pastel
Mojave
Het Red Axanthic
Pastel
Pinstripe
Spider
Woma
Granite
Sable
Fire
Spotnose
Yellowbelly

Any number of normal hets...

And with a little more in depth exploration, on the right day, you could probably find more within your price range...

Enchi
Butter/Lesser
Chocolate