Jim,

Do an E-bay "completed" search using the words "bond chips". You'll find 4 auctions that have sold.

The one you mention for $27.00
The second one sold for $10.69 but says they are from the movie "Living Daylights"
The third one sold for $26.00
The fourth one sold for $31.00(have to look at the listing itself to see the $31.00 final bid)

How long before they sell for $50.00?