Automatically lower an item selling price if it doesn't sell on AH

Currently I am using TSM and Auctionator. Just wondering if it is possible with these addons or another to automatically lower and item's listing price if it doesn't sell the first time or within a specified time frame to a lower price. Example I have an item I list for 1000g. After a few attempts of it never selling is there a way to set an addon to automatically lower the price by a set amount or percentage until it does sell? Like going down to 950g-900g-850g until it sells at whatever price.