Tom Morris is also a good source of handles and lines.
I should have mentioned in my post about Brodak that LOTS of people sell handles. Handles are one of those things that are easy for beginner-level or sport flying, but have some depth to them -- I was astonished the first time that I went from a heavy (100g) handle to a light one (20g). I probably picked up 10 points per flight just by changing (and now I fly a 16g handle). Yet, other people who fly expert in this area have tried the super-light handles and don't see any difference in flight performance.
So yes -- tell us more about what you want out of a handle, and we'll be better able to guide you toward what makes the most sense.