Will, there is a cost to education and your tution was pretty reasonable
You could have done a whole lot worse. If you like to tinker and learn about old double you have a good starting point. If you decide Old Guns are your thing - well you have started the learning process. And if you don't really take to them, you have a Wallhanger and you didn't sink alot of money into it.
All of the posters on this thread have overpaid or made a few misteps - I suspect. I know I have. And you didn't do too bad, IMO.