Czechoslovakia's decision today to raise prices for gas purchases above 25 liters comes on top of a 50 percent price increase last July.

But they were only good for gas purchases.

In the last several years, the spot market has accounted for up to 65 percent of natural gas purchases.

Their routes have been tracked by gas purchases.

Negotiating other natural gas purchases with countries including Iran.

Consider a credit card that offers cash back for gas purchases.

Since 1991, the state has taxed natural gas purchases from other states at 4.25 percent.

For example, an oil company might give you a debit card that lets you pay for gas purchases directly from your bank account.

Over a year of driving, that can amount to several hundred dollars in extra gas purchases.

Her last gas purchase before that one was a week ago - again a ten-dollar charge at a place in Tujunga.