There are far better investments than knives if you're looking for momentary gain. It really all depends on what you want it for. For example, the NMFBMLE, I think it's an absolutely amazing knife, it looks great, and i'm sure it handles awesome. That said, it's still a big slab of metal convexed into a cutting edge with some holes drilled in it, i'm not going to get sentimental over it anymore than some snap on tools.
Buying and selling Busses, i'd say i probably lost close to the price of a Battle Mistress in buying/using/reselling them. I really don't care though. If I bought a zero ground NMFBM, it'd be because the geometry is superior, not cus its shiny.
I was the kid who got toys on Christmas and they were all dirty and broken by new years. Some kids left their action figures in the packages until adulthood, I had them dismembered by hours end.
If I had a Ferrari it'd be trashed in a half hour, but it'd be fun.