Think typical tourist trap ah beng electronic shop. I think they would have painted a 'heavenly' portrayal of the magical camera that can do wonders and make a fat lady slim bla bla bla...Cannot help.
It is not a crime if A sells item X to B at $10,000 and B willingly buys it at this price. When in fact item X cost A only $1 to buy.
Provided there is no misrepresentation, threat or item switching.