Pepsi please understand that when I make an offer for a house I want to buy, I look at factors that I believe are important to my purchase. I will state them yet again, I look at recent sales for comps that match the home I am interested in. I look at days on market, I look at distress level. I look at recent activity, I look at interest in the home. I can honestly say I have never used the average difference between sales price and list price to value a home. I have never done it for myself, and I have never done it for any clients.
Perhaps some other realtors who post here use that particular statistic to help them price homes for clients.
To be clear here, you even said it youself that you might start your offereing at -15% or even above listing. So are we not saying the same thing? That your offer will not be based on the listing price, but what you feel is a true valuation of the home?