You also get a load of gold from selling the earned tallisman - especially the gunner variety - that can get you a load of extra gold in NC as they are 4 star - this really does add a lot as I often get few or more per run. Also you can level up Eddies (troopers or your own) easily of course which helps add to savings and I think they level faster in the harder level like Words of Warning than say Powerslave or AMOLAD. The upgrade material gains are pretty decent too.