Tons of fun. My favorite was The Countess Conspiracy (I loved that one!), but they were all great and every book was special in its own way--A Kiss for Midwinter talks about the frankness and necessity of sex ed., The Heiress Effect was about learning to not care what the rest of the world thinks about you, etc.

The only one I wish I'd skipped was The Heiress Effect. I really admired the heroine, but the love interest was kind of a dick and basically had to take a long time (with lots of hemming and hawing) to decide if he liked the heroine enough to be seen with her in public. And she still wanted him after all that! Pffft, she was too good for him.

ETA: totally worth the $10, btw.