If you are shopping online for a jersey to support your favorite sports team, the Better Business Bureau wants you to be wary of sites selling counterfeit merchandise. These sites will claim they are selling items that are officially licensed but are priced in some cases hundreds of dollars less than what an official product would cost.

That should be an immediate red flag, according to BBB Investigator Don O'Brien. He says another area in which you want to be cautious is autographs.

O'Brien says if you are unsure about whether you are dealing with official merchandise sites, contact the team, NHL, MLB, NFL, or other leagues directly for help.