A pricebook (tier) holds its own price for every item — so one "1/2-inch elbow" can be $6 retail and $3.90 wholesale without duplicate entries.
Managing pricebooks
In Settings → Pricebooks, create pricebooks (Retail, Wholesale, Field…), rename them, set the default, or toggle Jobber sync per book. Each item carries a price per pricebook, set manually or by that book's markup schedule.
Who sees what
On the Members tab, grant each member access per pricebook. Field techs can see the Field list but not Wholesale; inside sales sees Wholesale. Admins see everything. This is access control Jobber can't do — which is why the master price book lives in Pricebookr.
Hiding costs
Each member also has a Cost toggle. Uncheck it and that member sees only the price to charge — unit cost, markup, and margin are hidden. Admins always see cost.