I've been using a £20 tube bender I bought off eBay. It's not ideal - the curve isn't entirely symmetrical and it does tend to put dimples in the tubing - but it's good enough for now.
Mine's a bit studlier than your average brake-pipe bender. Still only £20 from eBay though. I've used it with a 3' long breaker/extension bar and it hasn't died yet.
I've been using a £20 tube bender I bought off eBay. It's not ideal - the curve isn't entirely symmetrical and it does tend to put dimples in the tubing - but it's good enough for now.