Oh the presentations are fine, Mrs.G and I had a lovely weekend in a posh hotel for nothing last weekend in exchange for sitting through an hours sales pitch. I'm hoping to get enough of these freebies to eventually get blacklisted by the companies - but certainly not buying one.
A colleague of mine, who has his own runway once took great delight in pointing out to an aerial-photos salesman the hangar and end of the runway in the top of the photo. Then bought the picture anyway, because it was far better than any he'd taken himself.
G