In my opinion, repairs are VERY balanced right now.
I'm running around the NA servers with a lolstr build, and having a good time with it. I wear a lot of plate and carry some pretty expensive weapons (dropping about 3000 or 4000 if I end up repairing everything at once), and I still maintain my money supply ( +- 5,000g from my budget minimum, +- 50,000g max).
I think it's fine, to be honest. But if you want to increase the money supply, I can't say I'm complaining x)