Hi, I know that similar topic already exists but I'm planning to sell my GPU which I bought from Amazon 4 months ago. I am most likely to sell it on Gumtree (I do it best there). How do I sell it with warranty? Should I give all my printed details that Amazon puts on an invoice of that GPU? I am actually planning to do same thing with other parts (also from amazon) or sell a PC as a whole but I need to know how to sell it with warranty.