Following on from this great article I was by chance on abe books earlier and spotted a book right at top of a search under 'Recently added'

I had been after a copy for a while and brought it straight away as a good price.

Some 20 minutes later I received an email as it was on my watch list advising it was for sale?

This suprised me but maybe thats computers for you?
However it may offer a possible explanation re recent book offered which started the artice! ie if i had brought this one again I bet it would have let me all through checkout etc even though actually sold.

Interesting?