I have never had trouble finding a used one for a great price......unfortunately maybe?
The real key is diligence and being willing to pull the trigger right away without looking back.
What I mean is I look 20 or so times a day if needed and once I find a qualified one within driving range I get as comfortable as I can with the seller on the phone and off I go.
I ALWAYS insist on talking on the phone whether buying or selling and this can help "Weed Out" a scam right off the bat in my experience.
Other than that it seems like the Timing is the biggest variable and since there are so few decent used ones out there that is why I Troll for them around the clock if I need one.
As an example I can not believe that the one Melissa posted from Scamp
Camp is not sold yet?
I would jump all over that one if I were in the market again,it looked good to me!