Fan site ArkhamCity.co.uk rounded up the various bat suits offered in a variety of different means and provided details on how to grab each for yourself. Unfortunately, it's possible you'll have to spend many hundreds of dollars and possibly import versions from other countries. But hey, that's fashion!
Update: To be extra clear, the image above is a fan-made amalgam of existing pre-order images and (possibly) non-official game art. We anxiously await an official image from Rocksteady/Warner Bros.
[Image credit: Fan-made; Thanks, Regis.]