It seems incredible that anyone could write as many books as Nora Roberts. And when you include the fact that she also writes under the pen name JD Robb it is even more incredible. If her Wikipedia posting is correct and up to date she has written over 200 books and sold more than 250 millions copies.
Until Oct 31, 2012 you can get any three Nora Roberts or JD Robb books from Audible.com for only 2 credits. This requires a membership to Audible to participate. By my quick count there are 135 audiobooks to choose from that are included in the sale. So I am not linking to all of them.
Also don’t forget that the Shock-tober sale on Monster Audiobooks for $6.95 is still going on. You do not need to be a member for this sale.