Why is scanscandinave spa so expensive?

I wanted to go here for Valentine's week with my girlfriend and she found out it is nearly $800 for the both of us including the massage. And it's $400 without the massage. I've always wanted to try it from looking at things online and from what my friends have said but it seems way too expensive. Is it actually worth going there with it being that price?

She went and booked and see if it was a Valentine's Day thing that was causing it to be expensive but we just checked for next week and it's still quite expensive.

Is it worth going there once just for the experience or is there somewhere else we can go that gives a similar experience and with a massage