Alright, here you go.
1) State all your rules upfront, that is, what you will accept for payment, what you will charge for shipping, and the accurate description of product.
2) THE SELLER ALWAYS WAITS UNTIL THE PAYMENT IS RECIEVED BEFORE SHIPPING... This is vitally important to keep you from getting ripped off. If you ship before payment, you will recieve excuses you couldn't even dream up for why you are not getting paid.
3) Paypal is best. It cost money, but it's insured. So if someone tried to rip you off, you're covered. Also, most buyers feel more secure using Paypal and often times you'll get more money for you're product which will more than cover your paypal fees.
4) Lastly, be cool and never demanding. I have worked with so many people and had all positive experiences. Two quick examples... 1) I once had a women take 11 days to pay me, I normally ask for payment within 7 days, but she contacted me saying that her husband was in the hospital and she needed a few days for the funds. Whatever her reason was, I was patient (Within reason) and recieved payment and positive feedback. 2) I once had a bidder purchase something from me and email claiming he won two auctions of the same item and was wondering if he could get out of his purchase of my product. I made a compromise with him by simply making him cover my listing and auction fees. Once again, negative feedbacks avoided and everyone's happy. Anyway, you can't please everyone but try to find compromise and most important, be honest, and people will continue to buy from you !
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