This Co. Is Buying $$$ Old AdWords Accounts…Should I sell??

The Company in the thread below is buying $$$ old Adwords accounts.
I am Done with PPC advertising and have 4 old adwords accounts. The company in the Sitepoint thread below is offering to pay me $400 ($100 per account) to manage their campaigns in my old accounts.
I think its a no brainer. Any one sell to them yet?? If you did or do let me know your experience.
Below is the sitepoint link.
http://www.sitepoint.com/forums/showthread.php?threadid=451994
There offer is below…..I think I will test them with one and then if they seem straight I will sell the rest.
We Buy $$$ Established Adwords Accounts
Description:
If you have an established AdWords account that you no longer need/use…Then we will offer to pay to use that account (Not buying the account, just the right to manage operate, and pay for our campaigns)
We pay $50 to $150 per account.
Must Be atleast 2 months old account in good […]

Original post by AdWizards