This guy breaks down just how bad the layout of the new PHB is. The cross referencing is non-existent and the subsections seem to go in the order someone thought of them. I’m sadly unsurprised that they’ve not improved on any of these problems which existed in the original 5e PHB.
The Core book is out of stock at my distributor, but since they have 4 new titles for preorder I am hopeful the core book comes back into stock soon.
Glad to see it’s on your radar. LGS are such a wonderful part of gaming communities. Good luck with your store.