Yes that's been my experience too. I think it comes down to it being a niche market, and not one that every man and his dog is into to make a quick buck. These businesses are run by people who are passionate about astronomy, and if there's one thing I've learnt about amatuer astronomers, it's that they are always willing to go out of their way to help someone else out.
Awesome stuff!

Just wish the prices down here in Aus were a little better at times.