How many times do you buy an expensive product from someone and never hear from them again?
Would it not feel great if you got a phone call a couple of days later from the person who sold you that new car or new Plasma screen?
Customers love to feel important yet we sales people want to feel important too. I cannot stress this enough; if you contact your customer after they have made a serious purchase you will be in the minority and you will gain much respect.
It is just too easy to ignore the person who has just lined your pockets and here is the best part if you call them:
You run the risk of getting repeat business.