I've got two new copies of the our book, signed by Paul and me, up for sale on eBay, for $80 + $3.99 shipping (the list price is $120). These are 6th printing, see the eBay link for images and more detail.
I've sold 7 signed books this way in the last week, and these are the last two. I'm offering these books to s.e.d. readers for a discounted $69 each, plus $3.99 shipping. I love you guys! Payment to be by PayPal (although I think you can use a guest account), to my snipped-for-privacy@rowland.harvard.edu account. Please email me at snipped-for-privacy@yahoo.com or my Harvard email address, committing to buy a book and I'll accept by return mail and send you the book after payment. Buy one before the horde of other eBay customers do! Happy reading!