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Libraries and publishers around the world are invited to support and participate in CLOCKSS.

Supporting Libraries

- Libraries Materials Budgets - - Annual Contribution -
Under $1 million $450
$1 - 2 million $600
$2 - 3 million $1,200
$3 - 4 million $1,800
$4 - 5 million $2,400
$5 - 7 million $3,000
$7 - 9 million $4,200
$9 - 11 million $5,400
$11 - 13 million $6,600
$13 - 15 million $7,800
$15 - 20 million $9,000
$20 - 25 million $12,000
Over $25 million $15,000

Consortial discounts are available. Please send email to info@CLOCKSS.org.

Participating Publishers

The annual contribution below covers e-journals, e-books, and any other materials you’d like to archive.

- Total Publishing Revenue - - Annual Contribution -
Under $250,000 $225
$250,000 – 500,000 $450
$500,000 –1 million $1,060
$1 – 5 million $2,120
$5 – 10 million $4,240
$10 – 15 million $6,360
$15 – 20 million $8,480
$20 – 30 million $10,600
$30 – 40 million $12,720
$40 – 50 million $14,840
$50 – 200 million $15,900
Over $200 million $26,500

Journal front file ingest is $.25/article, with no charge for the first 500 articles. For e-books and other monographs, frontlist ingest is $3.00/book, with no charge for the first 50 e-books. Back file and back list ingest for all materials is FREE.

CLOCKSS is a tax-exempt, 501(c)3, not-for-profit organization. Contributions are tax deductible. For more information, please email info@CLOCKSS.org.