[on tilt]

What they said.

The 3rd edition guide is still the most current.

New chips, and boxes of previously thought to be rare chips, will pop up from time to time. There are widely circulated rumours that there are hundreds and hundreds of Binions Horseshoe chips out there, and they are slowly starting to come out and be sold on ebay. Same with some early Tropicana chips.

I would recommend not buying the first rare chip to hit ebay - wait and see if there is more to come and prices dropping. Of course you may miss out on that rare chip.

The other is to only buy from reputable and well known chippers - they will say whether the have a whole box or not of a previously thought to be rare chip.

It also pays to ask around on the ChipBoard before you buy.