[header] How to tell if a salesperson is shady [title] Watch for extreme promises. [step] An incredible opportunity. There is a saying, if it sounds too good to be true, it probably is. 
If someone i know and trust tells me something is incredible, i'll be inclined to believe them, but from a vendor i don't know, an incredible opportunity is rarely credible. [title] Pay attention when they refer to a higher authority.