What happens next in this paragraph?

How to tell if a salesperson is shady 
Watch for extreme promises. 
An incredible opportunity. There is a saying, if it sounds too good to be true, it probably is.
Choose from: +If an offer sounds like something the salesperson promised, he or she is generally lying. For example, a salesperson may promise to give you $100 if you get an annual bonus.. +Salespeople might promise an endless number of phone numbers, talk about their jobs but never offer to pay a flat rate for what they do or take on. Businesses hire people who in return do not earn the big bucks they once did.. +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. Pay attention when they refer to a higher authority.. +If you can't be assured that the company you bought it for is the right one for you, then a good salesperson is likely shady. Some companies have been sued under the dealerships' act of 1977 (s)..
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. Pay attention when they refer to a higher authority.