For the new guy...
Always be POLITE when dealing with customers. Amazon is VERY customer service focused. If you act like you belong in high school, they will block you quickly.
Know upfront that Amazon has a ZERO TOLERANCE POLICY for counterfeits. You will not be warned, just blocked.
If you go over $750 in your first month, your account will go into a 30 day review. You can still list and sell whatever you like, but your funds will be held until the review period is over. The lower risk your items are deemed by Amazon, the more likely you will be to pass the review.
As Nobody999 pointed out, and I agree, always enclose a note with each item thanking the buyer for their purchase and inviting them to call or email you (or just email if you are uncomfortable on the phone) with any problems. It also does not hurt to POLITELY ask for positive feedback.
My policy is to treat each buyer as if they were a friend of my mother's. In other words, BOY WILL I HEAR ABOUT IT IF SOMETHING ISN'T RIGHT! Much of this is just common sense. But it eludes a lot of people. They argue with a buyer over a refund and lose their account. Actually, you CAN make your case without arguing. That is OK. But be rude, and you are gone.
Remember that the buyers did not HAVE TO buy from you and that Amazon does not HAVE TO allow you to sell on their site. Amazon does not have to PROVE anything to block your account. If they think you are up to no good, they can block you. If they think you sell crappy quality merchandise, they can block you. If they simply feel that you are not up to their standards of customer service, they can block you.
Unlike eBay, Amazon will always tell you WHY you were blocked. And also unlike eBay, there is no warning about selling counterfeits, they just block you. But just like eBay, once they make that decision, it is almost NEVER reversed.
Good luck!
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