From the RPL website:

Book lovers- you’ll find thousands of hardbacks, paperbacks, CDs, DVDs, children’s books and more, at great prices at the Main Library!
Friday, November 7, 2014
Friends members only: 10:00 AM-12 Noon
Open to the public: 12 Noon-5:00 PM & 7-9:00 PM
Saturday, November 8, 2014
10:00 AM-4:00 PM
All proceeds from the Friends Book Sale benefit Richmond Public Library programs. So… support the library and shop, shop, shop:
Hardbacks: $2
DVDs & CDs: $1 per disc- maximum of $5 per set
Paperbacks: $.50
Children’s books: $.50
Casettes: $.25 per cassette- up to a maximum of $2 per set
Sheet music: $.25
Great prices on special collection books! (closed Friday evening)
If you’re not a member of the Friends, and would like to shop the Friends preview sale hours, you can join at the door Friday morning.