It is stated on the parking pass that it is non-transferrable and not for sale..both things being done on eBay. Now, AAA has made changes to their parking passes...they show the dates the pass is good for. If you are asked to show appropriate ID to back up your AAA parking pass, you may very well have an issue.
The DIS does not allow for discussions that give ways around any official policy. I thought that eBay has stopped allowing this type sale but people must have found a way around it...as usual. It is a perk of doing business with AAA..not something that everyone is entitled to.