Or does it depend on what month you get married?
no I don't think they are the most expensive I think Callia Lillies are
No they are one of the cheaper flowers - carnations and mums are the only year around flowers which are cheaper - although certain blooms when in season will be cheaper still (think daffs).
Orchids are usually the most expensive flowers and the list of things more pricey then roses includes most lillies, peonies, iris, gerber daisy, sunflowers, and any of the smaller blooms.
Great stuff, thanks girls.