I purchased 10 x 512GB flash drives for $19.95 each from Amazon which did not store more than 80-90GB before writing errors and crashing. I threw 2 in the rubbish bin out of frustration and returned the rest to Amazon for a Credit by the free postage coupon they provided and by Australia Post on 30/10/2023 number 368QW02559400000650802 and Amazon credited me for these drives. I see that I have just been charged again for the credited flash drives by Amazon, because Amazon say that they have not received the flash drives I returned in the padded envelope I bought from Australia Post to return them in - Amazon's Christmas present to me, although I have returned the flash drives under Amazon's returns policy. Amazon sucks as does their customer after sales service, which does not exist. I won't be buying anything ever again from Amazon