In over six decades of wet shaving, I've only owned six DE razors, four of which I still have, and use.Wet-shaving is far, far cheaper than cartridge shaving. Don't confuse it with collecting.
Collecting is a totally different endeavor and must be compared to other collectibles...........,
I've never used a cart, mainly because I get a terrible case of sticker shock when passing through the men's grooming department.