best buy return question
 

hey if i want to buy some ram that cost 74.99 and i have a gift card of 15 dollars, if i use the gift card so it will cost 59.99 then i go home put in ram and it doesn't really seem to help me and i want to return the ram, do i get my 15 extra dollars back or does it go to credit in the store or do i just lose it?

Full amount.