It's been $4 and over for the medium and premium grades for quite a while now. I only buy the regular and the cheapest that I've seen is now $3.91. I'm sure it'll go up before Memorial Day. I fill up when I'm down to half of a tank so it won't cost me as much to fill up. I'm lucky that I don't live too far away from work and that I only need to fill up about every 2 weeks or so. I've heard that it won't be too long before gas is $8 a gallon.