I have a products with different costs in each location, how can i achieve this to get a right valuation for each?

cost defined by costing method. so if you receive products with different cost and after putting to WH you put to some location, you will have different cost on location.

for sure we need to say, that if you do not have any custom modules all transfers will be by FIFO/LEFO and etc. and not what you really want to put in that location.

what i do in my one project-using lots. using manual lot assignment module(in git free) and some custom module to put purchase price on lot. so after that i can move normally lot with cost what i want. without some custom modules, I do not see any possibility to operate real price (because it will be FIFO/lefo and etc).