10 Points!!! RUG ADVISE NEEDED? This formula worked great for a rug I already have, but how...

This formula worked great for a rug I already have, but how much would you tolerate the results from this factor into your purchase of a NEW rug?!? Do you think it is Accurate?

http://rugrag.com/AppraisalViewer.aspx?F...
I'm short.?
Answers:    it be very accurate for 3 of my rugs that i just now purchased locally. the fourth i don't know its real "retail" appeal because it was hand down to me a while ago.
Sturdy kitchen chairs... where on earth to buy.?
it depends i would be not super relent on it there be alot of things you could answer therefore one of those can completely throw the price rotten so be careful also where on earth are you getting the rug from???