Usually this is the cheapest gas in town! You've gotta time it right so that the lines aren't too outrageously long though.
Don't pay attention to other reviews - the Costco pumps are designed to stretch across to both sides, so you can pull up to any pump, regardless of which side your tank is on.
Please keep a few things in mind: Please ONLY do this if you've done it before and are experienced at stretching the pump over. It does take some skill. Also, Please DO NOT back into a pump. Finally, things move pretty quickly, please DO NOT get ahead of yourself and throw everything off by deciding that you need to jump in front of the person who is just finishing pumping so you can get a "head start". Just wait back a second and let them finish and then go ahead and pull thru to the 1st pump.
Oh - and if you live under a rock and are unaware, obviously you have to be a current Costco member to get gas here. You have to slide your membership card first, then slide your Costco approved payment (NO CASH IS ACCEPTED), and pump!