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NORTH TEXAS (CBSDFW.COM) - If gas prices go up, delivery companies charge you for the fuel. Okay. So if prices go down, you pay less, right? Wrong! You're still paying the same amount and in some cases even more.

The people at Dante's Pizza along Upper Greenville are closing up, but for hours there were pizzas being delivered at a rapid pace.

All the deliveries come with the same $2.00 delivery fee they've charged for the past year and Dante's isn't the only one not changing that anytime soon.

Kim Keim says pizza is big business at the Dallas Italian Eatery, and getting the pies to you isn't cheap. "Gas kind of goes down once and then up about six or eight times, and we can't really go up every time they go up, and we can't really go down every time they go down."

On a much larger scale, a global delivery service like FedEx faces a similar situation. The company's fuel surcharges are actually scheduled to rise when their new rates go into effect in February.

A company spokesperson says that's because there is a two-month lag between the fuel surcharges and the fuel price index, the amount on which prices are based.

It's an argument some find less than satisfying when lower gas prices are around them every day.

North Texan Kyle Delamar said, "I mean you run the company. If you want to lower the prices you can."

Marlene Aigbedion agreed. "It doesn't make any sense. If the prices are going down, they shouldn't add the fuel charge on there, because the prices are going down."

Of course if the trend in gas prices holds for the long-term, there is the possibility that businesses will have to adapt. Even Kim Keim had to admit, "Well, if it goes down to 50-cents, I could see us definitely adapting to it."

The folks at Dante's point out their delivery fee also goes into the maintenance of their vehicles, and if you don't like it, you can always come pick up the pizza yourself.

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