Book Sale for members only of the Friends of Chinn Park Regional Library. Help the friends of Chinn Park Regional Library by becoming a member of their organization. The annual cost for membership is $10.00 for a family, $5.00 for an individual, or $3.00 for an individual senior (55 or over). Once membership is established (takes only a few minutes), check out the book sale. .50 for paperback books; $1.00 for hardback books; .10 for magazines, plus books with special pricing and some audiovisual materials. There is something for everyone!