eBay's bidding tool Average price to compare your bid

I have been doing some shopping for some DVDs for my daughter. Lately she has been enjoying singing and I don't know many songs so I'm buying up musicals and cartoon movies that have good songs. So, I discovered something kinda cool today during my bidding spree

I have no idea if this is a new tool or just something that I have never noticed before. Regardless..... I like it. It tells me where my bid stands compared to the average selling price of similar items. As you can see, I'm kinda low in comparison, so, if I win, I know that I truly am getting a great bargain!
It comes up on the bid confirmation screen so look for it after your next bid.