That's in my hometown, Richland Center owned by a friend of mine a very busy rink and he makes a very good living from it in a town of 5000 peopleIn a town of 2500? Good luck with that.
Here's a picture of a roller rink in Wisconsin... it's the building on the left. I'm not saying a place like this isn't worth $15,000, but it's not exactly in what I'd call a high-traffic area. If the business fails or you're suddenly forced to pay property taxes on the land, I think you'd have a hard time unloading a place like this (note: I have no idea if this is or isn't the place we're talking about).
Google Maps