I Just purchased an Samsung Tablet at full price. Next month it is offered at a 40 dollar savings. Can I recoup the Difference, if so how do I go about it?

I believe that you can take your receipt in at their customer service counter and show them what you paid.....I think it has to be within 30 days of original purchase......I am not 100 percent sure of this but pretty confident that is how it works

I bought vinyl flooring and a few weeks later they had it on sale. I took it back and they credited me the difference

Costco has one of the best return policies ever. More than likely you could do it.

You can get the sale difference credited to you if you bring the receipt to customer service. They're great about that.