Have you seen it in real life or only online? The pictures are lovely but I think in real life the fabric will make it too casual. It is type of thing I'd wear to work.
Your budget isn't an issue - plenty of options within that bracket. Happy to find suggestions if you give an idea of what you feel comfortable in, any insecurities, colour preference etc!
My rule of thumb for Weddings is generally no jersey material, no stretchy elasticated tops and not too dark or white.