It is a big day to return those unwanted holiday gifts. It's being dubbed "Mega Monday" because many people are off work and will likely head to stores. According to Consumer Reports about 15 percent of people returned at least one gift last year. Stores have different return policies. See links below.
Sears: Extended return window to 120 days through holiday season.
Target: 90 day return window
Walmart: Every department has different return policy.
Best Buy: Many returns limited to 14 days. Other products have 30 days.
Nordstrom: Offers free shipping & pays return shipping on all returns (all the time)