With Store Commander you can increase prices on products associated to a specific supplier.
For instance, say one of your suppliers increases its prices by 2% each year, and you need to apply this percentage to all of this supplier's products in your catalog at once. Store Commander allows you to do so in just a few seconds by following these steps:
From Catalog > Product List
Use the filter option to display all products from a specific supplier (in the Large view)
Click on the mass selection icon on the toolbar
Right-click on the list of selected products and select 'Mass Update > Sell price exc. tax - Products'
In the new window, enter for instance '2%' to update the prices of all the selected products with a 2% increase, and OK to validate
This is it! If you had hundreds or thousands of products from this manufacturer, they are now all updated with the new prices in just a few seconds.
You can of course decrease prices, using a negative value, or increase/decrease using amounts as opposed to percentages.
You can also decide to increase/decrease price incl. tax, choosing the corresponding option in the popup menu.