I went on aliexpress to buy a replacement battery for my wisper bike after asking where I could purchase a replacement for my bike, I selected a battery which in the add was black waited nearly 3 weeks for it to turn up only to find they had sent a silver one. I complained to the seller and they said there were two pictures of different batteries in the add ,so I disputed the claim and after getting the same stupid reply of not selecting the right colour, to which I couldnt see a select option, we couldn't agree , so aliexpress said they'd step in after 8 days if we couldn't agree a compromise, they would step in with a solution, bearing in mind I paid an extra 10 dollars buyer protection, there response was the buyer had to fecund me 26 pounds which I'm totally discusted with there offer. Id just like to inform members on this forum not to buy extra protection, as my friend rightly pointed out that I was already covered by PayPal. I only wish I'd complained to them at first and not relied on aliexpress for a dissission !