get the one you want, if your gonna spend that kind of money on an animal, get what you want, not whats cheap. you would be happier with the one your wanting and thats where the true fun in having these pets are, if you get one just cause its cheap and can get it sooner, are you really doing right by the python ? or even yourself ? You would be more likely to keep the snake if its the one you wanted.
Heres some advice for ya, never settle, never....until your married, then settle on arguments because sometimes its just not worth the fight lol.