Got some info about this from FB FKG group. Will re-post:

Quote:
Maybe somone missed this post so here i am talkign about it, don't buy it.
For the love of god, don't do it, this is without jokes a shameful move and nothing else.
The girl, wich is called Agave, is from a serial code that comes with the first FKG book.
The original price is just 734 yen (almost 7$) and gets sold on Nutaku for 2500 gold wich are 25$, 4 times the original price.
This is a shame and they are starting to heavily jew on FKG, this must be stopped before even starting.
End Quote

Now I honestly dont care, its your money, if you wanna spend it for a weak 4* (its been confirmed these Code Girls are weaker a level weaker than the Event girls by other people who have her, and seeing as the event girls are weaker than standard Gacha girls... so yeah).
So yeah if you are a wealthy whale who doesnt care about money, do as you please if you just want her for the collection, more power to you.

If you are a person looking to pad out a place in your team with some useful new character, you might wanna skip this one.