Estimated eReader sales for 2009: 3 million (Forrester Research).

Projected eReader sales for 2010: 10 million (Forrester Research).

Number of eReaders unveiled at CES this year: 6.

Approximate number of cataloged books in the Library of Congress: 32 million.

Approximate number of eBooks in Google Books’ Library: 7 million.

Approximate number of eBooks available to the Kindle as of July 1, 2009: 300,000.

Number of hours after release that the first edition Kindle sold out: 5.5.

Price of the first-generation Amazon Kindle eReader at launch: $399.

Price of an Amazon Kindle 2 eReader in December 2009: $259.

Amazon’s build cost for the Kindle 2: $185.49 (iSuppli.com).

Price of Plastic Logic’s 8GB Que eReader when it launches in April: $799.

File size of the King James Bible for the Kindle: 3327 KB.

Number of King James Bible eBooks that could fit on an 8GB eReader: 2,581,885.

File size of The New Testament for the Kindle: 703 KB.

File size of Abbie Hoffman’s 1971 “Steal This Book” for the Kindle: 233 KB.

Price of Stephen King’s latest 1,088-page novel, Under the Dome, on Amazon.com: $17.

Price of Under the Dome in eBook form on Amazon.com: $9.99.

Price of a pirated copy of Under the Dome on a bitTorrent site: $0.

Weight of Under the Dome in hardcover: 56.9 ounces.

Weight of an Amazon Kindle with 1 book downloaded on it: 10.6 ounces.

Weight of an Amazon Kindle carrying its maximum 1,500-book load: 10.6 ounces.

Cost of a library card: $0.