FISHY WISHY Toxic truth about world’s most downloaded shopping app Wish with astonishing discounts and knock-off Nikes for £1.66 WHETHER it’s knock-off Nikes for £1.66, a coat for your dog costing £1.14 or, ahem, a vibrator for 72p, you can buy almost anything from online retailer Wish. The site, on the surface, is the ultimate one-stop shop for cheap deals on household essentials and the bizarre, like a Donald Trump loo brush or a miniature hat for your hamster. 9 Miranda Knox put shopping on Wish to the test to find out if the online store could live up to…