Twin brothers have been arrested after using fake barcodes to buy items at "deep discount."

Police in Green Bay say Justin Chitwood, 23, of Milwaukee and Nicholas Chitwood, 23, of Oak Creek used the barcodes to purchase more than 100 graphing calculators, which typically cost $150 each, for less than $10 apiece; only to sell them on eBay for huge profits.

However, police say the twins, along with their girlfriends, Brittani Hanson, 20, who lives with Justin Chitwood, and Brittany Adams, 20, who lives with Nicholas Chitwood, will have to go before a judge on charges of conspiring to commit theft, computer crime and entity ID theft.

Detective Barry Waddell, an 18-year veteran of the West Allis Police Department, who led the investigation, tells the Milwaukee Journal Sentinel, "The photocopying and sticking the new UPC sticker over the old ones is unique. I've never seen this before."

According to the paper, a criminal complaint accuses the two women of helping the brothers sell about $14,500 worth of Texas Instruments calculators on the Internet.