It would be interesting to see what the 'normal' price is. At $110/hour, it seems like $60/hour for the massage +$50 for extras. That is normal price of other shops. Maybe they are just giving the sauna for free.
It is relevant because it shows what the shop is like. If they say 30% off but dont actually give 30%, then they are just trying to con the punters here into coming into their shop. I doubt you would go to a shop that was trying to rip you off.