Right now, my current snake budget for 2008 additions, is the $700 that I am spending this month. Once I produce some babies later this year (provided the Ball Python gods and goddesses are kind to me) that will widen the pool of what I can add to my collection come autumn '08.
But I am selling some collectibles that are just lying around gathering dust. This is my advice to others who are not loaded, who might not have the $$ that you want for a reasonably-priced morph. Sell things on ebay; have a garage sale; Craigslist; use your paper's classifieds.