Price Increase in Vantage 8.03.403C

We are looking at the possibilities of a price increase and I was
wondering if anyone has any information on this with respect to
Vantage. Is there anyway to do a mass increase in the system by
Product Group (if we want to increase by a certain % based on product
group)? Has anyone tried to implement a automatic Surcharge based on
the line items Product Group? Any help or information would help.
Thank you.

IT Coordinator