I have my own idea about slabbing anything in the modern/copper eras as the abundance of high grade copies are hardly scarce so most potential buyers can find them cheaper raw. Maybe have a few in case they reach that “grail” status but just because they can be a 9.8 copy of some drek doesn’t mean they belong in a slab. I guess if you’re in it for the profits on a quick flip, ok because the fickle collector is gonna have to have it but long term, once the hoopla over a certain book is over, it was just a waste of money, time and space imho.