Sorry, I've looked over the FAQs, but I don't remember seeing anything in the rules about buying tools. Can someone link to it so I can make sure there's nothing else I'm overlooking?

To be honest, I'm really not just trying to be cheap, and I don't mind supporting people who make good tools and parts. And no offense to Jim Stein, but when a particular tool or part appears to be the only game in town, and it's priced significantly higher than similar non-compatible tools, it makes me question whether the part or tool is maybe being priced up a bit more than necessary.