I won't be getting the DLC for those items for a while yet - I've only just run the first part of the DLC purchase for catalog 2 - 10000 yen still has several costumes not available.
I imagine the one I'll run in two weeks will close catalog 2, and maybe I'll pick up part of catalog 3.
I'm doing neither at the moment though, since I'm working on Atelier Shallie on Hard. It's not so hard, once you get past the initial bit, and I'm still doing some bad habits (like rarely upgrading weapons, picking fights when I shouldn't, failing to use certain mechanics, and generally getting through it by winging it) even though there's no time limit anymore.