I've saved way more than that. Last year, I brought the wrong cedit card to the Home Depot (was expired). I showed up at the cash with four 1L cans of mixed color paint for cabs. Card didn't pass and I told them I would be back with money. Well, I then did an experiment. I went back... a week later! Lo and behold the 4 cans were in their discount section at 2$ each instead of 18$.
