Yikes! This sounds like work!
The Seattle Times reveals Return scam brought down by alert worker:

Anthony Davenport made his living in the return line at Home Depot - hundreds of them, in 23 states, police say.

Printing out fraudulent bar codes in a series of temporary homes, Davenport and two accomplices allegedly would place cheaper price tags on two expensive items, buy them and then return them at the true price. They then allegedly sold the cards containing store credit to others at a discount, pocketing the profits.

A Mesquite, Texas, man told police that he was using the cards, which he bought at 70 cents for every dollar of store credit, to build his new home.

In the year before they were arrested at a San Leandro, Calif., Home Depot, the trio visited at least 307 Home Depot stores, buying the same light fixture and faucet again and again and raking in $45,000 a month. Federal authorities last week froze $822,000 worth of their assets.

"It was their job," San Leandro Police Detective Cathy Pickard said. "They would get up in the morning, and that's what they would do. In the statements one of the guys gave, that's what he said: 'This is what we did for a living.' "

Hmmm, but it does pay well.