There is always a way to separate a fool from his money. On ebay it's called capitalism, there are a bunch of online dealers who buy cheap and sell high. The best way for you to protect yourself is to be educated on current value's of the item you are interested in. Also, be educated on the item you want to buy and don't believe a darn thing the ebay seller tells you until you have researched and verified what they have told you.
Now that that was said, yes there were a few AG's that were very limited issues. There were a few issued with Ironwood scales and some with Sambar Stag scales. Those will bring a premium above the standard rosewood colored scales.
FYI
The forum rules state that only gold members and above can discuss knife price, so be careful on what you are asking about.
JB