How Customers Redeem eGift Cards: To redeem the card, the recipient heads over to our store (www.trpstainedglass.com) and finds items to purchase. During payment, they select the Redeem a gift card option and enters their unique gift card code. If the price of the sale is worth more than the value of the card, the customer can pay for the remaining cost using the regular payment methods listed.. Keep in mind that the gift card your are purchasing expires 60 days from the purchase date.