This module provides many choices as to how to change pricing within you inventory.
A common scenario is to increase the price of a range of products by a percentage amount.
From the Admin menu
You are interested in:-
Pr level - 1 through to 4 as appropriate, if price levels 2->4 are based on Price 1, then you do Level 1 first. Based On - If you are simply updating Price 1 based on Price 1 x a percentage, then this would be a 1. Chg Pct - The change in % (+ve or -ve) being applied. Cent Rnd - To round to the nearest 10cents, enter a 10 in this field.
Example: Doing all stock codes, in Branch 10, Group INV -> INZ, price level 1 up by 10 %