Costco surprised shoppers with a shock drop of Kirkland Signature Nike SB Dunk Low Pro QS sneakers. Resale prices are already sky-high.

Here's how the 'Kirkland' Costco x Nike SB Dunk is performing on StockX.

A shock drop at select Costco locations turned the Kirkland x Nike SB Dunk Low ‘Grey Fog’ into one of the most unexpected ...

It’s the sort of sneaker release that didn’t feel real until it actually happened, but at midnight Saturday, Nike released a shock drop of the mythical “Wu-Tang” Dunk High on the brand’s SNKRS app.