We need a very simple custom made Virtuemart component that can update the client products from simple xls or xlsx upload of the client local table.
We have done similar component before.
How it should work?
It should have a simple upload of the client xls/xlsx file. The products should be recognized by the SKU.
After that, the product price and quantity should be updated.
APPLY ONLY IF YOU FIT TO THE BUDGET!
We will provide you full description.