Is PaperBackSwap free?
A La Carte Membership - no annual fee. Instead, you pay 49 cents (or use a "free swap" that you can earn by mailing with Printable Postage) when you submit a book request.
What is PaperBackSwap com?
PaperBackSwap (PBS) is a book swapping website which was founded in 2004. The purpose of PaperBackSwap is to use the Internet to facilitate the parity trading of books among members in the United States using a credit based system for swapping.
What has happened to read it swap it?
ReadItSwapIt (RISI) was a book exchange website co-founded in 2005 by Andrew Bathgate and Neil Ferguson of London, UK. And closed in Sept 2017.