As a previous account seller of OSBot, I can make this plain and simple.
1) If you are selling an account, it doesn't matter whether you are the original owner or not, the fact is you are selling an account.
2) The person BUYING the account should think ahead and ask who the previous owners were AND who the original owner is. The buyer should also ask whether they are going to get the original email or not. They should also ask who actually HAS the original email.
3) Under the "How to sell your accounts" Rules section, #9 says your terms of service, or rules. This is ENTIRELY up to the account OWNER, the person who is SELLING the account. If the owner says that if the account gets recovered, you will pay them back the full amount, then you will pay them back the full amount, if the conditions does not say this, then the owner is not liable for ANYTHING.
You as a buyer participated in the market and traded at your own risk, you should ask who the original owner was, previous owners, original email etc etc. You cannot expect a refund if your account was recovered.
In the likelihood of an account being recovered and the BUYER has evidence that the seller IS the original owner, OR is a previous owner WITH the original email address, only then can you open a dispute claiming that this person had recovered their account, as they are the original owner/the person with the original email address.
Now then, the only thing that moderators can do is leave it the way it is, or make it a requirement that each thread must post previous owners, the original owner and WHO has the original email address to the account. In fact I will add this now.
Moderates have never been very strict in the market section (Moderating what you post, not disputes), however recently I have been noticing MANY recovery threads. If your thread does NOT meet the requirement of http://osbot.org/forum/topic/18428-how-to-sell-an-account-correctly/ then it will be locked immediately. First you will be given a warning via PM and added to my naughty list. The second time, more punishment will come. I will begin monitoring the account section more effectively from now on to attempt to reduce the account recovering section.
IF you are buying an account, I HIGHLY ADVISE that you screen shot the terms and conditions before you buy the account.
Good luck.