Can buyers bundle multiples of the same item for purchase?

Unfortunately, our system currently does not allow for buyers to bundle two items from the same listing, even if they are different sizes.  Poshmark's inventory has historically been concentrated in single-item listings (since we've been predominantly a peer-to-peer resale marketplace), so have never needed this multi-unit bundle capability.  Buyers will need to buy in separate transactions if they want to purchase multiples of a single listing.  We have this on the product roadmap, but do not yet have a completion date.