SAP B1 - Vendor Special prices for specific customer

SAP 9.3 PL7

I am looking for some assistance in setting up vendor/customer specific transfer prices

(i.e. the prices we will pay when buying these products from a vendor for this specific customer only) .

To give an example of what I mean: one of our customers say customer X has special pricing agreed with us on 10 products they purchase regularly , all of which come from one of our main suppliers (a SAP vendor). This SAP vendor would have 3000+ products with normal prices preloaded. I need to create the special purchase price so that whenever we create a purchase order when buying for for this specific customer that the pre agreed vendor pricing is used.

Can this be done in SAP B1?

Thanks, Eoin