I bought the Star Wars: Dark Nest Bundle (three books, bought & downloaded at the same time), The first book the L type was a bit smaller than I wanted it to be, the second was fine, and the third was back to the smaller size of the first one.
I'm pretty sure that Sony is getting the source e-texts from the pubs or distributers, as the case may be, and just converting & DRM'ing them, I seem to remember something from somewhere about them prodding the pubs to get the font sizes bumped, so it may not be something Sony has access to adjust.
