67 Dodge Dart 2door sedan drivers door glass

Sounds like you have a full blown warehouse. Awesome. And there are probably a lot of local customers in the huge S California classic auto market.
I have to fight the logistical (shipping) problem on nearly every medium to larger item that I have listed.
Simply the distance to potential customers. 900 - 1500 miles to west coast 1200 - 1500 miles to midwest, 2000 - 2400 miles to Penn and Northeast.
Greyhound has been a butt saver, allowing a way to move the bigger stuff, without breaking the bank. However a lot of smaller stations are now closing their in person kiosks, and all ticketing is done on line. Eliminating the package express option at those smaller stations. Now have to transport items 45 miles south to the downtown El Paso station, as the las Cruces station has gone to on line ticketing only.
Yep have plenty of experience in wrapping items. It is much more cost effective to "form fit" packaging to an item, rather that simply dropping it in a huge box, with a lot of empty space, which you will be charged for.
With glass, my experience has been it is hard to sell. Most won't want a piece of used glass. A big reason might be distance from said customer, and the perception of high ship cost. And of course, breakage in transit. Believe as time goes on, more glass is now being reproduced for popular models. Eliminating that market for used glass for popular models.