4 Park Flex Tixs ?

[scooterx]

I going to orlando oct7 - 13th and will be going to Disney 2 days and US,IOA, Seaworld the remaing three days. I plan on buying the 4 park flex ticket for 2 adults and one child. These tickets are good for 14 days from the first use. I am only going to use them for 3 days between the 7th - 13th. Can these possibly be sold or given to someone else that will be at the parks the following week. Has any one ever seen people trying to sell unused days or swap tickets at the gates? I don't want to get in trouble selling them. But I would'nt mind recovering some of the parks out of sight admissions. THANKS