I discovered a new search function for iBooks in the new iTunes today. There is a tiny triangle next to iBooks in the top bar that when pressed allows you to go to different sections of iBooks. One section is low cost books - $1.99 and $2.99 and they are newer, 2008 to 2011.
I'm to lazy to use the computer.
That's why I use my iPad for most things now.
Besides my iPad and I are joined at the hip
But I will go on line and check out the iBooks little thingy.