hey
you did pretty good if you're talking about price. i say you paid around the middle to high end of the scale for the 100. 100's retail for around $300-$370 NIB WITH 2 MAGS.
if you haven't read already, make sure your gun comes with the magazines with the black followers. the red ones are BAD. if you get stuck with the red ones, send them to CZ for a free replacement... on second thought have your dealer do it for you (less work for u)
make sure you give us a range report when it arrives. and if the trigger is giving you a problem, there is plenty of help on this board so don't be afraid to ask.
-andy