the country's retailers had a merry christmas with a big jump in sales. but now that americans have exchanged presents, shaquille brewster tells us they're back in the stores returning the ones that are not quite what they wanted >> reporter: now comes the multi-billion dollar effort to correct santa's mistakes. >> i would say it's like 75% to 80% is going to go back. >> reporter: after holiday sales saw their biggest increase in 17 years, up 8.5% compared to 2020, two in every three shoppers are now planning at least one return, putting an estimated $120 billion worth of products back into the system. and returns, while maybe free to you, are costing stores more than ever this year. with jumps in labor, transportation and storage prices, processing a return costs retailers an