It's the real world fellas and if you are naive enough when you walk into a "dealership" you are going to get stung. If you walk in with you eyes open, listen to the patter, body language etc, you aren't.
When I get an email in my junk filter from Nigeria, i don't open it because I'm racist, it's because if the Crown Prince of Lagos wants to rest £5,000,000 in my bank account, I'd rather decline the offer.