Neume's posting found here

There seems to be a buttload of confusion. I'll try to clear things up.

First off, the 80% XP Manuals in the Portmanteaus are bugged (if you didn't notice). It's OK you can keep it for now, don't worry we aren't going to ban your account for exploiting. This bug will be fixed in a future patch. When the fix goes live your 80% Manuals will move to the purchased inventory and require activation to take effect. So those of you that have them, enjoy your free 80% XP boost while it lasts.

On to costumes, as of 3.0 imcGAMES and HanbitSoft have changed the way new costumes work. This was part of the reason it took so long to get them for our version as, I'll be honest, we (GamersFirst and imc/HBS) had a heated disagreement about it. In the end we're a little strapped to the way things are for the time being. So from this point on new costumes will be featured for a limited time in these Portmanteau boxes. When a new box comes out the old box will leave. There are currently no plans to offer these permanent versions of the costumes by themselves.

Additionally, when we launch Echoes of an Empire - Volume 2 ALL CURRENT COSTUMES ON THE BAZAAR WILL BE REMOVED! This is a major change, we know. Timed costumes on the Feso Exchange will remain and we DO have plans to add new timed costumes there as well. Also being removed in EoaE-V2 are the Costume boxes (not Portmanteaus). We will be replacing these with new class specific costume boxes. These items will randomly reward costumes ONLY for that class. We will continue to "discuss" the positives and negatives of this new system with our partners HBS and imc with the hope for a change of sorts.

Finally in EoaE-V2 we will be removing 1 off items. These are times that are offered elsewhere in stacks (such as Upgrade Accelerators and potions. We will still be offering the packaged versions of these items. This change is mostly a house keeping issues as there are a LOT of items on the cash shop that we want to "clean up"

My thoughts on this matter and a summery found here