Don’t forget about the straightness of the grain either. The straighter the grain the better the shaft. You can buy deals on shafts, but find out after you get them that the grain runs off at mid shaft. Straight grain is the number one thing when it comes to the strength of the shaft as well as being able to keep them straight.
Also check on what sealer is being used (if buying ready made arrows). Not all sealers will hold out moisture.
When I shot wood shafts I would straighten them, then I sealed my shafts with a mixture of epoxy and acetone (commonly called the Massie finish).
Gasket lacquer works great as a cap sealer over other types of finish, but is something I found not to be that great when used by it’self.