Limited Shop: Special Avatars and Everything Free
For some reason, within the file for the special shop, there's data for lobby avatars being in it, however they're dummied out with dev flags. I disabled those dev flags, and also made them worth 0 zeni so you can just purchase them for free.
Chances are it'll break in a future update so just turn it on, buy them, and you can get rid of the mod.
You'll also need to be in an online lobby to access the shop.
v1.1: Fixed an order issue v2: made everything free