You've just got to keep looking. If you're just looking to buy 1 or 2, you're going to pay $50-60 for it at most any LHBS. I don't think they're over-priced, it's what they're selling for nation-wide (if you can find them). I've obtained some of mine through buying a complete set-up that someone else was selling - kegerator, CO2 tank, etc - keeping the kegs and selling the rest of the stuff off.
Prices on kegs is way up from where they were a couple of years ago but I doubt we'll see them come back down.