Organising a spontaneous trip to Malaysia. Missus has wanted to go for a while & wants a break from Bali

Just found out apparently they have one of the best surfing wave pools in the world & I've always wanted to have a go for the novelty.
But I'm having trouble trying to work out how much it costs to actually surf it & not splash around with a truck tire kinda thing.

Anyone know something about it & the actual surfing cost