To Paul's point, I have had the worst experiences both buying and selling to new members here and on melnet. Not necessarily scamming tho some were. More like the "craigslist" or ebay buyer/seller looking for a flip purchase or to unload that type of thing. Some real caveat emptor. Not the type of buying and selling experience you have when dealing with established members, as pointed out above.
Really is worth treading carefully.