The limits of ecommerce?
Sanj asks, "I wonder how many Amazon sells?" Link: Amazon.com: Jewelry: Ladies Diamond Cut Bezel Link Necklace With Princess Cut Diamonds Diamond 21.08cttw.
Notice that you can't buy it with one click shopping. Prevents real impulse purchases, I guess.
What's neat for me about this is that it highlights what people really buy when they buy a necklace for $169,575. And it's not the necklace.