I believe the cheapest combos you can get would be anything with pastel in it but you are looking at $700-800 for a pastel butter male. If your females aren't up to size start putting away extra funds. If you put aside $60-70 a month for the next year you would have enough cash. Plus this way it won't be so shocking instead of impulsively dropping almost a grand on a ball python. It sucks to wait but I think getting a combo morph is the way to go with males.

Good luck hunting!