The sale price is immaterial as it's only worth what someone is willing to pay. Looking at overpriced ads is asking for trouble and you have to take an overall view.
I love the ads where someone has a bike at 5k and some bright spark comes wading in with "you've undervalued it and it's worth 6k all day long". The bod then thinks he's not getting enough, shoves up the price and it's still in his garage 6 months later! My reply is "if you say it's worth 6k, you better get your arse around to buy it or fuck off and mind your own business".
I've just been offered a really nice 1100 with lots of goodies but it's overvalued as he's just added all the farkles up on a base price. I've put a bid in with him for what I think it's worth to me and just waiting...............