Which bootleg? I've tried a bootleg, but the silver lining on the torso isn't as shiny. Also, the limbs and head were out of proportion. I tried to replace them with official Lego parts, but I had to do a bit of sanding and filing to get them to fit properly.
The Dark Knight Two-Face? It's a custom that I got from onlinesailin on ebay. Unfortunately it doesn't seem like it's in stock anymore, I got it quite awhile ago. Maybe you could try to PM them?
My personal philosophy for collecting minifigs, well, anything really, is not to aim for a full released/published set. With Lego especially, given the crazy amount of variants I would have to get multiple Batman variants even though I might not like each of them. And I think that if I need to get minifigs that I dislike, then it defeats the purpose of collection (for me at least). So for me, a complete collection would just be getting all the minifigs I like. It also allows me to fit in customs into the equation, and not have to collect the infinite amounts out there.