How much should I spend on a older IHC 2-8-2?

[eightyeightfan1]

I bought a "slightly" used IHC 2-8-0 a few years ago for about $50.00USD.(ref:88's Power Roster). It sat on the shelf for a couple years after. When I decided to run it, I pulled it out of the box, on the tracks and it ran great. It sat(Didn't move) on the Xmas layout, for the summer in an enclosed porch, When it was time for it to run it for the holiday season, I applied power, and the thing took off with out me nudging it. After a couple of circuits it did start slowing down. But a couple of drops of LaBelle on the running gear and it was fine.
I guess what I'm saying is, they are worth the price.