Welcome and way to come in hot on your first post!
I'll repeat myself, but how can you look at Epic Collections sales and not just do the same thing? Maybe don't go as bold as Marvel and just start with a few things - Silver Age complete collections of Batman, Superman, Wonder Woman, Justice League, etc. Build out from there. Do SOMETHING!
Sorry? I'm still livid about the Cassandra Cain thing. One more collection would have gotten them to War Games and then all of her run would at least be collected *somewhere*. It's one g.d. collection!