Yes, filter to the product grid will also work for us.
Can you advise if this is available ?
Mar 05, 2014
First of all, Special price is available in the Grid Menu - see sctreenshot.
Good news for you!
All another attributes will be included with help of our new Add\Remove attributes window.
This option will be available in next Release of Store Manager for Magento
See draft version of window - screenshot.