I have the same problem. Taobao sellers promise to guarantee 5 years before purchase, and the damaged original will be provided free of charge within 5 years. After buying it, I began to cheat, saying that it was free, but the courier fee was 15-20 yuan. The normal courier fee is 6- 10 yuan, but the high courier fee is actually that the original is not in 3 yuan, so the customer has no choice but to overcharge.