Hi Mate,
No they're not particularly hard to keep. No harder than beardies really. Cage requirements are similar - they just need more height. They will spend 90% of their time perched on branches. Mine will eat woodies, crix, fruit, veg and fuzzy mice. Personality wise they are very interesting. Generally they're not quite as receptive to handling as a beardie and are a little more fragile. Hatchlings I've seen between $250-$400. Adults generally start at $400 and go upwards from there. Adult females are usually very hard to get.
Regards,
Premier Pythons