What? It’s a feature they have had on eBay for 20+ years. Like, I can’t even OFFER cheaper rates to customers, which is beyond incompetence. I have items that I COULD ship in a small flat rate, I have others that would ship in a large flat rate. OBVIOUSLY the customer would always pick the cheaper and then I would have to pay the extra $ on my end.
They have us create BOX sizes in settings. An option of “what boxes would fit this product” is like a day 1 QOL, let alone YEARS of asking with no response.