I will update this guide from time to time, so check back occasionally. I will try to keep it brief.
In fairness to sellers (I am one of those, too), this article is mostly aimed at large-ticket buyers. If you are not risking thousands of dollars on your purchases, some of these suggestions may be overkill. Regardless of how much money is at stake, though, it is YOUR money. Fraud cuts both ways and sellers can be robbed, too. It is harder to do, perhaps, but it happens.
1. Do not follow e-mail addresses that are included in the text section of postings. If the seller claims that is the only way to contact them, abandon ship and go no further. Send all the questions you have ONLY via the Ebay mail link. When you do send a message, ask about payment methods and shipping and such, not just about the item itself. If you don't like the options the seller gives for payment method, tell him what you would be willing to do. If he is real, he may try to accomodate you because he has the item and he wants to sell it.
2. Short duration sales are very suspicious. There may be a few good reasons to sell quick and cheap, but there are a million bad ones. Scammers want to quickly hook their marks and then disappear into the ether. They do not want their postings to languish for for all to see.
3. Be wary of "private" auctions which do not disclose the names of the bidders. Scammers do not want buyers to warn each other, so they hide our identities as well as theirs. A private auction is not a defacto sign of ill intent. If everything else looks good on a sale, this should probably not be a deal breaker.
4. American laws do not apply anywhere but in America. The bad guys know that. So use great care, if you must proceed at all. Especially do not deal with anyone who is "temporarily" out of the country.
5. If the sale is supposedly in the United States, make sure the bid amount is in American dollars. Non-American currency values are printed in italics on Ebay, so they are easy to spot. It doesn't make much sense for a guy in Texas to convert your bid to Euros, does it?
6. What is the return policy, and how much do they charge for shipping? Don't be impressed by money-back guarentees and dirt-cheap shipping. If it is a scam, they aren't going to give your money back and they aren't going to ship anything.
7. Look at the seller's feedback. Carefully! Don't just look at an impressively large number and call it good. There is a ton of useful information here if you take the time to really investegate. If it is a stolen account, they are somebody else's points anyway. But you can learn a lot:
A. Has he bought or sold anything recently, and what was it? Accounts that have no recent activity are much more likely to be stolen accounts.
B. Is this auction consistent with items bought and sold in the past? If a buyer of $5 trinkets is suddenly selling a $4000 drum set, take note. It may be valid, but it is suspicious.
C. Is the item location the same for this sale as for his last sales? Does the location actually exist, or is it some fictional locale?
D. Are his accepted payment methods the same as his last sales? If he accepted PayPal before, why is he insisting on a wire transfer or cashier's check now?
E. The seller's positive feedback points for purchased items are not very useful to you as a buyer, so don't over-value them.
8. What else is the seller posting for sale at the time? Follow the link for Seller's Other Items. If they have a large number of unrelated big-ticket items currently for sale (musical instruments, computers, cameras, bicycles...) that is very suspicious.
9. Look at the photos. Are they just stock pictures from the company web site or are they apparently authentic photos of the item? Scammers can get pictures of anything from the web, including from other Ebay auctions. If you have seen the exact same photo in other auctions, be suspicious. Also, look at the backgrounds in the photos. Does it look like they just took their digital camera into a store and started clicking away?
10. Talk to the seller! How?Use a phone number web-site or directory assistance to verify that the person's name, location and phone number make sense. Don't be afraid to ask very specific questions about the product and sale.
11. Is the item in the correct category? Another device scammers with use to hide their skulduggery is to post items in obscure places. Instead of searching the entire Ebay universe for your item, specify your category.
12. Payment method is a very big deal. C.O.D. is great if they will go with it. Escrow.com is good (though a little pricy), and the only escrow Ebay recommends. Some criminals set up bogus sites that sound and look like Escrow.com, but do not be fooled. DO NOT use any other escrow site. PayPal is good too, up to a point, but the sale does not qualify for their $1000 protection unless it specifies that on the posting. In that case, the best you can hope for is the $200 coverage extended by Ebay (minus a $25 service fee).
If you use PayPal, use your credit card rather than your own bank account. Many credit card issuers will refund money stolen from you. It is not fail-safe, but it is another layer of protection. Never use Western Union for these transactions. Western Union's own web site will tell you that. Wire transfers and any kind of check is a one-way ticket to fraud.
13. Most second-chance offers are scam attempts. Real second-chance offers are ONLY tendered via Ebay's My Messages, not an outside E-mail account. They will and not ask you to directly contact the seller. If there is a hot-link on the page, take a look at the URL it points to when you roll your cursor over it. (The URL is usually displayed at the bottom of your web browser) There are fake Ebay and PayPal sites that attempt to steal your login information. If the URL does not start with "https:" it is not a secure site. Do NOT log in there!
14. Finally, do not wait until the last hour of the sale to get interested in it. If it is something you want, there is some homework for you to do. Give yourself the time to evaluate things and give the seller time to respond to your questions. Do not burn bridges, but do not allow yourself to be burned.
You are doing business with total strangers here, and don't forget it. Most people are decent and honest, but some aren't, and they can really mess up your day.
Please take a moment to vote for it if you find it helpful. Good luck, my friends. Hope to see you around the 'Bay!