I'm thinking that selling individual items, whether it be a kit, tools, or supplies, would bring in more money. Depending on the size of the stash, and the quantity of supplies and tools, it would be quite an undertaking, and would take a while to accomplish a complete liquidation. Selling in this manner might possibly generate a steady income for a little while.
I sold well over $1000 worth of kits in 2020, one at a time, which helped me finance needed repairs to our old house so that we could sell and move into our new house.
I didn't receive anything from eBay.
I also offered items for sale on a couple forums that allow such activities, and was able to complete a few deals that way. Sometimes, though, the auction sites may get you a higher price than trying to sell on a forum.