I didn't know it until just now, but Lee Strobel's
The Case for a Creator is available for
free on the
Internet Archive.
As with most material on the Internet Archive, this book is available in several formats. The ones that this book is available in, that Mobilereaders are most likely to be interested in knowing about, are the following--pdf, ePub, and mobi (Kindle).
This knowledge comes a little too late for me, as I already bought it in both ePub and mobi formats.

Sometimes it pays to wait . . . .