is s400 the only product he selling?

Something like this happened very recently where a seller posted a product through Amazon and Amazon wrote back saying they cancelled the order in an email EXACTLY like the one ATRajan posted...the seller than e-mailed the buyer with similar wording to the email bananaCream received.

...basically they post on amazon, then when Amazon cancels the order they email you back saying buy it through our website, or western union MO, etc. Usually just a scam.