For in-store pickup only and with stock varying by location, Walmart offers the CRC Heavy Duty Silicone Lubricant 11-oz. Can for $2.28. That's tied with our mention from a week ago and the lowest price we could find by $5 today. It eliminates sticking, binding, and squeaking on various surfaces, and can also be used as a protectant.
There are lots of things Uncle Sam can't touch — so long as you play by the rules.