Just because some find things for next to nothing doesnt imply , by virtue of us reading about it here, that we have the genetic predisposition of doing the same 100% of the time. Sometimes we are lucky, sometimes we have to pay a going price.
Sure, you can bide your time and maybe run across one for 35 someday, or maybe not. Bottom line is fair money is fair money..if $70 seems alot, then dont answer the ad.
As far as hurting ones feelings paying out such a price for older gear..take a look at what that sold for when it was new,think about that for a minute...now take a hard look at what you will pay for new equipment that is of the same quality now (if you can find it). I wont even get into inflation rates.