Tulsa - This year more than ever, people are looking to save money as they do their holiday shopping. But, beware, you may be paying more for what you think is a great deal.

When you see those "going out of business" and "everything must go" signs, what do you think of? Big bargains, right? Not always. ABC News went shopping with a hidden camera and found plenty of high-priced surprises.

Professional Liquidators now owns Linens & Things. And, for them, going out of business is a business. For example, $129.99 now, but it used to be $109.99. In many cases, prices on items were cheaper when Linens & Things had it on clearance.

Shopping expert Sarah Roe says it's a common practice for liquidators. Their job is to get as much money as possible for the inventory, which means you may not be getting the lowest price.

"No, it may not be the lowest price and especially right now there are so many deals going on online it's very easy to figure out online what the best deals are," Roe says.

ABC News also compared prices at Circuit City stores that are closing and run by liquidators with those at regular stores run by the company. Out of sixty products, one third were the same price or less at the Circuit City stores that are not going out of business.

So, remember, at going out of business sales, even if it's not a great deal, it's a done deal.

"You cannot return or exchange to these stores," Roe says. "So, if you drop a hundred dollars on something here, go home and find out you could have gotten it for 40-something somewhere else, you're out of luck."

A liquidator involved in both the Linens & Things and Circuit City sales says they follow all state and federal laws, which makes it perfectly legal. So, remember, you can get good deals at liquidation sales. The key is not to assume it's the lowest price.

None of the Circuit City stores in Tulsa are among the 155 stores nationwide that are closing. However, the Tulsa Linens & Things is now run by liquidators.