The tired perception of transient sellers turning their lights on and off on a whim is a myth. Instead, the relationships between sellers and the marketplaces they support is lasting. Seller retention rates are strong; 93% of sellers transacted year-over-year. Most impressively, though, is the expansion within those sellers. Seller GMV retention was 164% - meaning that last year’s seller base generated 64% more GMV in 2021 Q1 than in 2020 Q1.