Don't take much notice of expiry dates. Think they are conservative to a large extent. Have used B&W film 8years out of date [stored at room temp in plastic tub] and E6 5years out of date[ fridge stored after I baught it but no idea how it was stored before purchase, as baught at camera fair] with exelent results. OK would not use it for anything critical but as fun fodder no problem.
Films were Fuji, Agfa, Kodak and Ilford in both 120 and 35mm, all were home developed with no problems I could attribute to the films age, the odd underexposed frame being due to metering error on my behalf.
It of course depends on the price, no one payes top price to take a chance on their film but if the price is right then give it a go.