Well I'm in Indiana and found this. http://www.cheapassgamer.com/topic/316500-gamestop-tivpromos-thread-xxi-double-credit-on-systems-traded-30-extra-credit-on-gameselectronicsaccessories/ which looks like we don't get taxed on credit. Not sure if that only applys if you are paying full amount on credit thoughMight depend on the state you live in but where I live I get charged tax on the entire purchase price regardless of how much I pay off with a Gift Card or credit.
I'm also in Indiana, and I'm pretty sure you only pay tax on the amount of the purchase you pay for with actual money.Well I'm in Indiana and found this. http://www.cheapassgamer.com/topic/316500-gamestop-tivpromos-thread-xxi-double-credit-on-systems-traded-30-extra-credit-on-gameselectronicsaccessories/ which looks like we don't get taxed on credit. Not sure if that only applys if you are paying full amount on credit though