Some eBay hints:
Check feedback, but don't just go by positive/neutral/negative. Click on the item numbers. See what the items are.
Are they selling similar things, or wildly different stuff (ie is what you're buying out of character).
Do they have a lot of buy links for small, trivial items, or are they regular sellers? Someone who sells a lot has an interest in keeping you happy too. Someone who buys trinkets then sells a new Mac may be just bidding up the feedback with junk buys before a scam.
Check the seller's "other online auctions" link while you're at it.
Do they buy/sell from/to the same people all the time? Networks of scam artists give glowing feedback to each other.
Negaitve/Neutral feedback isn't always a red flag; some buyers are just idiots and can't be made happy with anything. Check out both positive and negative feedback by clicking on the feedback rating of the guy who left it. You can usually tell if he's a moron from his own feeback.
Although there is probably a genuine reason for a "pre-approved buyer only" auction, I can't think of any. Chances are he's harvesting your eMail address for some nefarious purpose. Don't bother.
Always, always, always pay with a Credit Card.
When you buy something, get the seller to give you a phone number and street address before you pay. The address is going to be on the shipment anyway; there should be no objection. Check the info online before you pay. Be suspicous of cellphone numbers (they can't be checked).
Be suspicous of any auction that does not include a real photo of the item. It's easy to cut and paste a picture of a Mac from the web. Look for the guy's carpet in the photo.
Although I don't consider friendliness a curse, be wary of a "chatty" seller when you contact him after a winning auction. People who are too nice to strangers are usually trying to disarm your normal wariness.
While you're at it, eMail the seller before you bid. It's easy. Ask for more photos if you want. Get details someone would know if they really have the item somewhere in the house. Anyone who's really used a Mac knows something about them; PC users and scammer's don't.
Be careful of inflated shipping costs. Some people make most of the money from shipping. A little is OK; I don't feel it's dishonest to try to add a dollar to cover the eBay listing fee and a trip to the post office.
Couriers offer tracking; USPS offers the heavy hand of the US Postal Inspector who can lay felony charges. Premium USPS services offer tracking as well. The $5 brokerage fee from Canada Post (via USPS) is a good option; UPS or FedEx might charge you $40 to collect a dollar's worth of GST.
Take your time, relax. This isn't video poker. Pick a price and don't go above it.
Very few things are so rare that you won't see them on eBay again, from a seller you feel safer with.
[ December 31, 2003, 07:49 PM: Message edited by: gordguide ]