With stamp prices recently jumping to forty-one cents, everybody is running out to buy books of first-class stamps. But you may not know that where you buy them could make a big difference in how much you pay.

Dorothy Roth, like many of us, needed new forty-one cents stamps.

"And I thought well I'll stop at UPS; they sell stamps. I've been their once before,” Roth explained.

She decided to buy a roll at a nearby UPS store.

"I didn't think anything of it when she said forty-five dollars,” said Roth.

When she returned home, Roth discovered the store didn't sell her the new stamps, but rather the old thirty-nine cents stamps. She said she could live with that, except she then realized the store had charged her an additional six dollars on the roll of stamps! Which was an additional six cents per stamp.

Roth called the store.

Roth explained the phone conversation she had with a UPS store clerk, "She said that is a surcharge. I said a surcharge for what."

Reporter, John Matarese contacted UPS Store headquarters. He learned that stores are allowed to add surcharges to stamps, although prices vary from location to location.

U.S. Postal Service also allows retailers to charge extra for stamps. If you ever bought stamps at a bank atm, you have paid a surcharge.

There is nothing wrong or illegal about these stores adding a surcharge to the price of stamps, or shipping for that matter. Without any surcharges, how could a shipping store possibly make a profit?

Roth says that next time she will go to the post office.