How often do BTS show up in need of rescue? I prefer to do it that way, but don't know if it will ever happen. Are you sure $100 is good?

I know I want one, don't want to miss a good opportunity, but also don't want to dive in before I know there's water in the pool. The guy claims it's his brother's - who doesn't take care of it. Then says it's a baby and a few weeks old. Not a lot of time to know if he'll take care of it or not in my opinion.

If I miss this opportunity, do they tend to show up at reptile shows?