Be very wary if growing a business based on on-line auction sites.
Like so many abuses committed by large corporations, you don't hear or read much about arbitrary banning by on-line auction and selling sites. Like many vile deeds that don't hit home until they hit home.
But if you are investing your time and money hoping to grow a revenue stream or earn a livelihood using on-line auction sites you should educate yourself about the likely fate of your business should your account become the victim of a witch hunt.
The bigger name auction sites have now become so successful that customers are expendable. If you unfortunately receive an instant message from a known fraudster and the site consequently freezes your account, don't expect an autonomous, level-headed human being to notice that you did nothing wrong and allow you to go back to feeding your family and paying your rent.
Spend a short time searching for unreasonable banning from auction sites. For example "EBay banned me for no reason" returns 6.7 million hits. Now, I will be a bit surprised if at least one new poster doesn't insist that EBay doesn't ban people for no reason. Wrong! I know this first hand. Anyone who makes this statement has simply been lucky so far, doesn't know what they are talking about, is being paid, or some combination thereof. But if you are the type who believes that everyone ever shot by a cop must have deserved it then maybe you could believe it.
Once you get on their shit list don't expect to be treated rationally. Their email notice that your account is frozen has a ring of being slightly reasonable, including language like "while your account is suspended ..." and "if you want to appeal this we would like to review your account information with you." But the email address is a no reply address, they specifically tell you not to reply to the email, they don't include a phone number, don't tell you what you need to do, and you are locked out of your account and can't log on. Does that sound like they want to review your account information with you?
There are many on-line descriptions of what transpires if you are able to find a phone number on your own, and are able to talk to a live person.
"Hi, my account is frozen and I don't know why".
"Ok let me verify some of your information."
... verifies full legal name, home phone number, cell number, email address, paypal address, mailing address ...
"Yeah, so I am trying to figure how I can get my account turned back on."
"Well your account has been reviewed and it is suspended indefinitely."
"Ok, um, do I need to fix something? Did I do something wrong?."
"Our experience is th .... I am not able to tell you."
"Was my account hacked?"
"I am not able to tell you."
"Can you tell me anything? Is there something wrong with my listings? Can you direct me to any information anywhere that will help figure what is wrong?"
"There is nothing I can tell you?"
"So my account is just frozen and you won't tell me if I did something wrong, or if someone else did something to my account, and I am just left in the dark with no clue what is going on?"
"Um, there is nothing I can tell you."
The only inaccuracy in this depiction is that I was so stunned that this guy was so steadfast in his role of keeping me in the complete dark that I rephrased every question 3 or 4 times just to make sure of what was really transpiring.
In my case I had only a few months of my time invested, and my livelihood doesn't depend on it. But if you are paying your rent or buying groceries with your on-line store income, or are hoping to some day, you may want to have a back-up plan in case you accidently get accused of being a witch ... I mean in case you are flagged as a fraudulent account.