This modification allows you to update all prices on your store simultaniously without the need of running queries in phpMyAdmin.

Normal price & sale price are updated independantly for better control.
e.g. If you wanted to increase your store wide prices by say £1 just put 1 in the normal price input box and 1 in the slae price input box and hey presto all the prices in your store are now £1 higher. Or just use the - symbol to decrease prices.

Very easy to install