Mine is still doing quite well. From what I get from reading others experiences about them I would say mine is fairly active. It always comes out to beg for food when it sees me and at night i catch it inflating itself quite often.
My last post of pics disappeared so I will repost the little monster:
I have it in a 65B all to itself with an Aquaclear 110 and and Eheim 2217. Overkill on both tank and filter but it really cuts down on how often I have to clean it. Though I do miss the shorter 40B it was in for cleaning purposes.
His tank
Hendre
Sounds like a good price if you can get your hands on it.