What is a decent price for a used .22 cal RWS DIANA Model 34?

[RedFeather]

Well, you didn't mention a fifty mile trip and buyer's premium (yeah, that's kind of greedy).  Figure $3.50/gallon and maybe three gallons and you're in the neighborhood of buying a 34 off the classifieds.  I see deals on Craigslist sometimes but, once you factor in the time and gas, they lose their appeal.  Take your time.  34's are always coming up for sale since they sold a bazillion of them.  And counting!  And consider that, should you have "won" the auction with a bid of, say, $125, add $12 gas and $5 for the "privilege" of handing them your money, you're at $142 or about $70 less than a new one with the improved trigger, no previous owner issues/dings and a guarantee.  $70 isn't even two tanks of gas these days.

[Mark 611]

Lymon, you have to do what you feel is right for you! I'm just trying to give a heads up form my experiences, I've had almost every airgun that I thought was worth buying, and believe me I've spent way to much money over the years in this hobby of ours, I could have bought 2 brand new Harley's! let's put it that way! and I have learned from tuning them and usage of these guns to know what is what in the airgun world, so believe me I'll give you an honest opinion,