As I’ve said many times, selling parts online is the easy part, packing and shipping the items is the real job. You have to pack stuff like it’s going into a war zone. I probably have over 300 boxes on hand, most triple wall, and I use carpet tubes to send straight trim. I also petition my locals in the spring to alert me if they’re throwing away their swimming pool solar covers, which are just 30’x30’ sheets of industrial bubble wrap. If I had to buy all of the materials to ship items, I would be out of business. Most delicate items, I use the “box in box” method, and line the outside box with 2” sheets of styrofoam that I purchase from HD, to satisfy the shippers insurance requirements of a minimum of 2” of packing around the item. I have about a 99% success rate, the only time I’ve had trim show up bent was to Hawaii, and that box was mangled beyond recognition. I had to buy another complete car to resend that trim to the buyer, even though it was not my obligation to replace the damaged trim!
Packing is a beotch, but the most important part of selling items online.