When I was purging my quilt books I listed them all on Amazon.com - very simple, I could see what others were selling the same book for and decide what to price mine at, and they already set the shipping at $3.99 for regular (media mail/parcel post) or I think $8.99 for expedited shipping and let the customer choose which they prefer. I liked it because they handled collecting all the money vs. having to go through Paypal. Downside is you have to pay to ship it prior to getting your money from Amazon.com. But once you have confirmed you shipped the book, you can immediately request your money from Amazon via direct deposit into your account.
Hope that helps!
Tanesha