That da Vinci painting that sold for 450 million recently
http://edition.cnn.com/style/article/da-vinci-salvator-mundi-sale-christies/index.html
The penultimate bid was 370 million .
Then it was raised (by the winning bidder) to 400 million )
My question is why did he/she raise the bid by such a big amount -30 million .
She/ he may have got it for a lot less less than the additional amount of 30 million .
You see this a lot in programmes where people are bidding for items .
It is a question that no one here will be able to answer i know .
But do you agree with my musing ?