I manage a self storage. A couple years ago I was helping a tenant move his stuff out of a small unit (the elevator was not working and I felt obligated to help him). Almost EVERYTHING in that unit was Nike shoes, and EXPENSIVE ones, still in the boxes. He was also always well dressed in the latest whatever Reebok style track outfits, with LOTS of gold chains. Whatever. I’m a woman and I have maybe 4 pairs of shoes. I could care less about that crap. Much to my husbands delight. Now... if I see a really cool guitar, that’s different. ;)
That guy might actually have a plan. There is a market for never worn retro shoes.
If he’s not impulsive, he can make a decent return.