pozertron wrote...
How expensive are we talking about? And what kind of DLC are they?
Let's tal about content first. Bamco usually releases the DLCs in Volumes.
Each volume is in catalog that you need to download and you can buy them from the catalog.
Usually each catalog will have:
1. NEW song, and usually with a new costume set.
2. New Characters for Free Play and their respective songs and costumes
(Until now: Hatsune Miku, Ai Hidaka from the NDS Idolmaster, Eri Mizutani from the NDS, and Hatsune Miku Append Version)
3. Some new Themed costumes
4. 3 New colors of a costume
5. usually a set of themed accessories (New years, Snow Princess)
6. PSN Avatars
7. Mail, for the games mail content. basically you can receive mails from the idols.
8. Cash
9. 1 Free Accessory
You can buy them separately
Now about the prices, here what I remember
1 songs costs about 1800 yen
1 set of 3 new colors 3600 Yen
So, it's always somewhere around there, and it's also cheaper to buy a set.