Questions about Nebulites

I know a few people who make a decent living merching off opening boxes and selling the nebs. I've never tried it myself so I can't say for sure, but at 2m a box, buying 100 boxes lets you see ~200 nebs, and a single 2% stat B neb makes you your money back. It's why I haven't sold my last few stacks of boxes.

I must be extra unlucky with them, then.
I've opened way more than 100 boxes, and if I get a B out of the lot it's accuracy or something equally useful.