nah, dont get a childrens, i was recommended one 10 years ago for my first, and it was a horrible nasty bugger. never liked them since. MD or coastal is the way to go, and coastals u can get as cheap as $100. majority are fairly well behaved and fairly predictable.
either way, if its a bitey bugger then it should make a good feeder.
if ur keen on a jungle, i have seen them go as cheap as $250, i love my jungles, my female is the most active python i own.
cheers
mel