I purchased a clock through AliExpress, which ran slow by 5 minutes per day. They asked me for proof and suggested I send a video. Really? Do they want me to video the clock for 12 or 24 hours to prove that it is running slow or did they really want me to take the back off the clock and adjust it by 5 minutes every day? The clock was cheap but it is reasonable to expect it to work properly. I am not going to this much trouble for the refund; it is the principle that matters. By rejecting my request for a replacement or refund AliExpress is either virtually accusing me of being dishonest or simply showing that it doesn't care about its customers. A few dollars is obviously more important to it than its reputation. Never mind, I won't trouble AliExpress with my purchases in future and I will ensure that my friends and colleagues on social media are fully aware of its business practices and ethics.