I have 2 warehouse and 1 retail outlet. How to track inventory of each location? location tracking is turned on, but i dont know inventory balance of each location.

i have location tracking turn on, but on the inventory item i cannot state location. So do i create 1 product item (of the same item) for each location? 

i am aware you can track the total sales and the sale of each item by location. 

I am also having issues with product that has multiple pricing tiers, I.e retail pricing vs wholesale pricing of the same physical product. I have to create multiple product item for each pricing tier, this in turn causes my inventory to be split and i have to manually move or calc each time i would like to know how much stock i have on hand.