Yes, I'd swerve Zapaka: it only merits 2.6 on TrustPilot.
https://uk.trustpilot.com/review/zapaka.co.uk
I think the one pictured may be a knock-off version of Tiffanys Celine dress, which usually costs a few hundred!
Pretty style, though, for a teen.
If she can't find a suitable alternative, might she consider hiring instead? There are some decent prom rentals to be had.