If we're staying in the area, there's one place that is almost always cheaper than everywhere else, so we tend to just head there every time. Most of the gas stations in the "city" are in the same general area, so it's not specifically an inconvenience. We never fill up at the gas station closest to us, though, because we never let the gas tank get low enough to need to (we'll be in town sooner or later). If we're going to be heading to a neighbouring city (which happens fairly often), we'll make it a point to fill up there instead of stopping in for gas when we get down to half a tank (which is the usual practice). I'm in a fairly rural area, so gas is quite expensive where I am, but there are a lot of cheaper places to stop when we're heading to another city (because the drive is at least an hour and a half before we get anywhere).