Nod,
I agree with your list IF you are a new seller. Otherwise, as in my case, I do not agree with #1 (I am not buying a digital camera, just so someone can see the ball in a picture that can easily be deceiving. I already got stuck myself by someone who is supposedly a trustworthy seller here.). I alreay have a reputation of sorts here and on other selling sites. If a ball or other merchandise is not as I describe it, I will take it back. Not one person has yet to complain, beyond asking me why I charged so little.
COD is fine but many people do not realize there can be a large ($7-10) surcharge for what may have started out to be an inexpensive ball ($25-40). Also COD guarantees nothing more than a heavy box than could contain rocks (saw people pay $10,000 for audio mono-block amplifiers and receive said bricks!). I, as a seller, have gotten the raw end of the deal several times when a buyer requested COD. They never picked up the box; I got stuck with my product a nd the shipping AND COD charges. Now, if someone asks for COD, to protect myself, they must pay the shipping and handling charges (if there are any), before I send out anything.
FYI Paypal seems to be a protection for the seller, not the buyer. Although I use it and have not been burned by the use of Paypal, I research my sellers (when I am buying) very, very carefully, even when using PayPal.
These are based on a few of my experiences over a 25 year period.
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"Just because you can do something does not mean you should do it."