We had a sweet cl deal a few months back when we took the kids to disneyland. The poster buys those 6 day passes, he then advertises on cl for disney trips. We met the poster in front of disneyland, got the passes, gave him a check for a deposit, (because you need to give the passes back to him) and then had a great day at the park. They had the speed passes as well so it worked out for all of us.
Just like everything else, if you are wary and keep yourself from being scammed, you will be okay.
