You don't really have to spend $250 to save $0.25 per gallon of gas. There is always sales at Winn-Dixie that allow the customer, or guest, to save an extra $0.05, $0.10, $0.15, $0.25, and hey, maybe even an extra $0.50 per gallon!
For example, Winn-Dixie might have an item such as toothpaste, lets say Colgate, it will be on sale 2/$5 and when you buy the two of them for $5 you'll save $0.05 per gallon just for buying that. They always have items like that throughout the whole store in every store, you just have to keep your eyes peeled for a red and yellow tag that reads "fuelperks!".
You can also find which items are indeed "fuelperks!" items by looking through your local Winn-Dixie's weekly sales ad which, like in any supermarket, should be located by the entrance of the store . And yes, I know all this to be true because I myself work at a Winn-Dixie.
Your friendly neighborhood bagger at Winn-Dixie, Brian.