How much money?? :-D
This shop has a ton of trees in tiny pots like this and they are always moving them around. I am almost positive that this one is NOT attached to the ground in any way. I didn't try moving it, though, but there are probably fifty other similar trees like this there and many are on wooden tables. Most are citrus or plumeria, though, this is the first annona I've noticed there.
Thanks for identifying. I had only seen more mature soursop fruits and they tended to be more bean-shaped than simply round like this.