Does anybody have any info or reviews on this detector,my mate just bought one and I was shocked big time at the price he paid for it ,he has no idea how to use it and gave me a run with it and I got it purring along ok and it does seem to do what it was designed to do,but trying to research it is another matter,all the good blurb by the sellers and no reviews from buyers,I have a funny feeling he has been shafted ,some people do strange things at times,any info would be good thanks Barry 