For people who want non-Dunk special-release shoes like the Rowleys, use the ShopApp. Your payment information is saved and it takes less than ten seconds to buy something.
It makes it possible to actually get what you want instead of going to a reseller or bot. Also, some stores have their listings on Shop app before their websites have them for sale.
I managed to get a pair of XLTs from 510 thanks to Shop, while people were on Instagram complaining about the availability.