A friend of mine got suckered in by one in Phuket a few years ago and I ended up going with him. Luckily he said no, but the guys peddling the timeshares were these rough and rugged English blokes who would probably have been small to medium level criminals back home before they moved to Thailand, and were quite intimidating. The frontmen were really professional and nice though. You sit down and watch these vidoes and all of a sudden a bunch of thugs enter the room to close. I can see how a lot of people would have problems saying no.