SmartStrand or similar approximate cost

Hi,

So I'm building a house for the first time, and currently the contract has in it that I can use upto $90 linear metre for carpet.

I understand that Smartstrand will likely be more expensive then this. But I'd like to understand approximate prices.

I'm not sure exactly how much I would need, there are 3 rooms of approximate 3.5*3m
A hallway, and an open plan with 8*5m approximately.

Does anyone know how much it would cost to get the carpet, and the underlay installed?

Or are there some other good alternatives I should look at?
I'm looking at the cheaper varieties in the smartstrand range

Thanks

Found it, roughly $49 per square metre or close to $180 per linear metre + installation costs
I'd definitely need a 15-20% off sale to be able to afford it...