Flowen's is like Guardianna in that only a few characters can really use it well. 3 in this case though 1 of those 3 has a better option in rambling may (which really is only better on her cause she has a broken shot attack animation).
This keeps its price down like Guardianna's is for whatever reason cause only 2 would really want it and like those 2 that are ok with Flowen's it can be debated if it is worth it.