As for the best time to sell, Morrison says it depends on the shoe. “It could be two weeks. It could be two months. Most likely, it’s only going to get more expensive over time, as there’s fewer and fewer pairs. Whether that’s 1 per cent, 5 per cent, or 150 per cent more expensive, it’s hard to predict.”

As an example, he uses the recently-released Travis Scott Jordan 1s. “They were released in April for about £160, then they shot up to a £600-£700 resale as soon as they sold out.” At four times the retail price, that might seem like an obvious no-go for the discerning buyer – yet those who forked out are reaping the rewards. “Somebody told me that they just sold a pair on our platform for £1,500,” Morrison says.

Know Your Market

If you don’t know who Travis Scott is, you need to do your research. Same goes for Virgil Abloh, Supreme, and any of the other big names that command huge prices on the platform. Any of the Nike releases with Scott’s name on are gold dust, while Morrison admits that Off-White designer Abloh “still has the Midas touch”. He says the handbags Abloh designed for Louis Vuitton can go for as much as £8,000.

But it’s not just the names you need to know – an inside-out knowledge of the sneaker and streetwear markets can help you game the system in interesting ways. Take Kanye West’s formerly unparalleled Yeezy sneakers. “In the Yeezy market, it’s now only the regional releases which are doing really well,” Sabir says. “They did an exclusive Asian release and an exclusive European release, and you could double the price on them because StockX is predominantly American.”

Alternatively, there are good deals to be made by simply thinking outside the box. Take the recently-released Satin Jordan 1s, an exclusively-female style. Or not. “Because it was a women’s release, they only went up to something like a 9.5,” Sabir says. “There were very small numbers of those higher sizes, because it would be like getting a men’s size 15.” Yet men wanted these shoes too, and were willing to pay high prices for the more male-friendly sizes. “You’re talking £750 on StockX at the moment, when the retail was only £120,” Sabir says.