SAGE has product purchase/sale price function but this is non-responsive though there are existing Orders on the products from different suppliers at different dates, SAGE cannot access all these data collectively.
Solutions
However, POs can be accessed from Purchase Order page for a given period to pull out lists of POs to inspect the rates/prices of these product which is inefficient.
Another way is to go to the product page and check orders under purchase and entering the dates, sites, supplier, etc to access the POs under that product which takes a lot of time and effort considering if there are 1000s of products
The Purchase Order has the product prices and therefore the sale/product price must be link to the PO and accessible easily