I recently tried the new "penny auction" site Rexoco.com.The site looked pretty confusing to me upon first logging on. I was not really sure what was going on. And let's face it, I'm cheap. I did not want to have to spend a bunch of money to try a website. Each auction bid will cost approximately 50 cents (the rate of each bid changes based on the bid package you purchase). My friend was on the phone explaining everything to me. She said, pick one and place a bid. You simply click the button that says "place bid" under the auction you have chosen (there are approximately 20 auctions at any one time). I was pleasantly surprised when I won the first one I tried with just 3 bids (which would have cost me approximately $1.50 but I received free bids by using a code).
Once you win, you will receive an email that tells you to print out the certificate or you can go to "my auctions" tab to find a link to print it out. To redeem the certificate that you have won, you will need to take the certificate to one of the participating gas stations. At this time, most of them are Jenny's Markets in the Denver Metro area. When you arrive at the gas station, take the certificate into the store and present the certificate to the cashier. They will verify that it is valid. Upon validation, you can go back outside to fill up your vehicle (mine was close to $60). Then go back into the store where the cashier will adjust your gas purchase down to the certificate rate and you will only be asked to pay that amount (mine came to $42ish).
While there are a few extra steps to getting the deal - for me, it was well worth it when I saved $18 on gas! I'm so excited to have found this site before I have to sit on I-70 this ski season.
Couple other notes. I have been more successful getting the discount gas certificates than I have the gas cards. I have been told this is because they have several participants that are not near participating gas stations. However, you never really lose any money because once the auction is closed you can apply any "lost bids" money directly to the purchase of a gift card.