day-after christmas sales in hopes of cashing in on holiday cheer. >> the week after christmas can account for as much as 15% of what retailers see during the entire holiday season. if you add it all up, this final week is just as important for retailers as the week before is. >> reporter: experts say the 26th is also a big day for gift card purchases with target customers cashing in their stocking stuffers the most today. >> gift cards for seven years in a row now have been the most requested gift item. we're expecting gift cards to bring in $28 billion once they've all been redeemed. >> reporter: and for those of you who may be lugging around that sack of returns, some advice from "consumer reports." be sure to read the fine print on your receipts for the exact return window. and to see if you can get an extension on holiday gifts. also, be on the lookout for restocking fees and keep in mind that some items, like video games and movies, can't be returned once you've opened them.