I returned to hobby last fall after being away from amateur brewing for the better part of eleven years. I just wish that I had held onto some of my old gear. While the cost of a lot of brewing gear has not increased significantly since I left the hobby, I cannot believe the prices that used soda kegs are fetching these days. I paid $10.00 each for the soda kegs that I purchased in 1993, and they were clean soda kegs with nice rubber, no dents, and no creases. Now, my local homebrew shop wants $60.00 each for soda kegs that look like they spent time in a war zone. At a minimum, these kegs will need a new set of o-rings. Most will probably need at least one new poppet to ensure leak-free operation.
I do not know about other AHA members, but, for me, the price delta between new and used was too small to justify the hassle of refurbishing used soda kegs, which is why I went with new AEB soda kegs this time around. I suspect that $75.00 will be the price point at which all, but the most house or student loan poor amateur brewers will choose to purchase new soda kegs.