Department Store Items

Hey, so I was wondering if the Protein or whatever at the Department Store in Helios City is actually useful or not. Or if there is anything good at the store besides pokeballs and potions. Thank you!

Everstones and smoke balls for breeding (smoke balls if ur FB/MA mon is under-lvled).
Incenses are necessary to breed certain baby pokemon
On floor 3, all the EV-training items (power weight, power anklet, etc) are really useful for EV training if you’re running normal/hard mode
F4 items like protectors evolve certain mons and the battle items like focus sashes are all-around helpful.

Really depends on what you’re going for but hope this helps :))