i've bought games at Green Man Gaming before, but- and this might be an unpopular thing to say- G2A is my go-to for cheap games/DLC and they have F4 season passes for $24
i really don't understand why G2A get stuff on so much, i've bought loads of games there. there have been two times total when i got a key that didn't work, and all i had to do was contact the seller/contact support and i was hooked up with a working key