My Personal View
When I visit a site and I see across or the side – Special 90% off or some special; I become very mistrustful and vigilant. Or they show some ridiculous shipping charges, when you know that shipping costs are expensive for that item; be disbelieving and guarded. If there is a specific time frame for purchasing, my thought is that there must be a serious need of money; fast money. And they are looking for me or you.
Why? You are going to pay for it anyway, but the question then becomes, am I paying way too much? I expect for each to make a profit, because that is how you stay in business. If I were to make a sizable purchase, I would like to talk with somebody, preferably the owner or an officer of the company with policy decision making capabilities.
Ask questions of yourself; write the question down and then ask questions of the company you are thinking of doing business with and if there is hesitation or the answers are not readily available; move on. There are a lot of businesses out there that would treat you with great respect for your business.
Another item that makes me leery is to see a lot of unrelated items on both sides on the page. What are they selling? They are probably getting advertising dollars from somebody else, not a bad idea, but then, what is their game. The question then becomes; who is the customer, the commercial ads or you. I prefer me. That is why I will always have a clean site. I do tell of my professional allegiances as applicable to the websites business. Why? You are going to pay for it anyway, but the question then becomes, am I paying way too much.
These are just some of my thoughts, you can read them and heed or discard and if you have a different take, let me know and I will place it here for all to read and I will place it on my blogs.