21 August 2014: $1.99 on Kindle - The first four books are on sale for $1.99 each. 
 I've read up through book 12 (there are almost 40? stories in this series now), and I have some serious issues with Eve (the MC) and even occasionally with Roarke (hides from mobs with pitchforks) 
 ....I should review these are some point. 
 But this is a hugely popular series, and I admit that the futuristic world is pretty well done. The mysteries are sometimes really good, sometimes not so good.