Case in point, when someone offers you something for free. It may be out of the kindness of their heart, but cynical me always thinks further. "Why is she giving me that for free? What's the reason behind it? Is she trying to be in my good books? Is my birthday coming soon?"
When the dress goes for 50% off at $30 each, you might think it's a good deal, but you spend minutes in the shop and you end up with 4 dresses. The sales associate is so friendly and nice to you, and seems to have your best interest at heart. At the end of the day, that is $120 gone, when you could have saved the money if you weren't lured by that one particular design.
When Chris' colleague offered him a "special" deal of just $3,000 a month to rent a terraced house, with the use of his Jaguar, for 2-year lease. He was urged to sign on the agreement asap. Bear in mind that the same house normally goes in the market around $5-6k a month. I told him to not make a hasty decision, as he has yet to do his due diligence, checking on the property. Maybe the house is in bad condition. Maybe it's haunted. Maybe it gets flooded when it rains.... Whatever the reason is, a special deal like that, must have its something something.
He thought it through, and decided to decline the offer. Anyway his colleague kept pestering him to take up the offer, which seems to me like a desperate move to make a quick sale. 
(I should know; I am a fucking salesman.)So how do you make your decision? Are you as distrusting/cynical as I am? Is there such a thing as a "great" deal in your books?
. When I told him that he said that he came to bring a gift and did not mention a sale, he proceeded to interrogate me about my banking account and that I will pay a wonderful price of 3000 Euros for the books (in several months payments). I told him no way, I just was being nice, because I could understand him selling me a couple of books and me paying on the spot with cash. I could buy them, but fuck no, not this; he suddenly lowered the price to 2000 Euros. I insisted that no way I was going to get my account charged with anything and he lost his cool. Apparently, I was a bitch, a fool and an awful person for not wanting "the deals". I told him to get the hell out of my property and at that point, he told me that not until I signed a contract he had pulled from his case. I lost my shit there and called him all kinds of stuff, a young lady spilling all kind of cursing words to a middle aged man, he was shocked. He though he could pressure a sale on my ass 