The Egyptians were a group purchase through someone who organized the effort through chiptalk.net. I'd say your best bet would be to sniff around there as BK mentioned. I've also seen them on ebay, however, again, like you noted, they do get a solid price on them.
The other "chipco blank" chip to hit the market at an unbelievable price is the casinotek chips. Customs are even a better deal at only $75 a face.
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