This won't happen, 10 dollars to sell a 70 dollar account get the 70 dollars and 2 months later recover it with a possible 10+ mill on the account to make another 25-30 + sell it again. This doesn't eliminate scamming, only slow it down(maybe), or make the scams even bigger because of people not wanting to pay 10.00 for something and lose it quickly.
I know for a fact you can recover accounts if your the original owner, with no time table. I created an account within the first 3 months of Runescape, back in 2001. I quit that account back in the day. I recovered it the last day logged in was 2750+ days ago. No matter what the situation is, people can always scam back accounts. I don't like the selling accounts, but a market is a huge part of every community. No community would last with no market.