Accounts can, indeed, be bought and sold -- I came real close to selling this one a while back and I'm still not sure why it fell through. But it does take time to build it up to where it's really worth anything.
That's the problem, the account becomes a sentimental part of life!
It is hard to sell them - I feel. Hence, why I will not sll this for a long while.
If you want a full member account, you can usually get one for 0.1
BTC which is quite a good rate for one.
Sr Member accounts are around 0.2
BTCHero members are around 0.5
BTCand legendary can be anything above that!
These are based on my opinion and are in no way very reliable and useable.