I bought on ebay, open box, 2 Crucial SSDs 500gb P3 for my computer repair shop. They both developed fatal hardware errors in a few months. Although the SSDs are well within the guarantee period, Crucial would not replace them because I was not the original buyer (and neither would be my customers so no guarantee for them either). I will NEVER buy a Crucial product again for myself, or my customers. Samsung has a much better warranty: they replace their defectives no matter who has it.