All sales final. Saved 5 months to purchase v-bucks for my son. The cards won't link to his account, and the store will not make a exchange, much less a return. So I am out money that will still be in their pocket, but they don't care.
No warning of all sales final. Manager tells me it would be printed on receipt (you know, after the purchase). Not helpful.
I will not shop at GameStop again - EVER.