Costco’s (COST) Q1 Earnings Beat, E-commerce Sales Up 14.3% Posted byZacks Equity Research December 10, 2021 Leave a comment on Costco’s (COST) Q1 Earnings Beat, E-commerce Sales Up 14.3% Costco (COST) registers a decent comparable sales performance in first-quarter fiscal 2022. E-commerce comparable sales increase 14.3% in the quarter.