I got one from a LFS
(30 miles away) for $9
We have had him for around a week, interesting creature. He seems to climb around the tank, almost to the surface, daily. He also forages for food on the tank floor, sometimes "fighting" our neon tetras for a meal. He got his lunch stolen by Shelly our assassin snail the other day... there was nothing he could do, the snail was un-phased by his poking and pinching.
Our CPO molted last night. I found his exo this morning. I don't think we will see him for a few days until his new shell hardens...
How often does your molt, and how long before he is "back in the game" after molting?