Forgot to add the quote/image in post.

the quote hasn't mentioned and costs for labour, extra plumbing and electrical connections and never had a quote that included anything not specified so assume that could all be extra so i would check prices for all items specified and consider alternatives and please share a view of the plans for the outdoor kitchen but always keep in mind that a good free standing barbq can be bought for under $1000 while saving to add the dream outdoor kitchen although i would always include basic plumbing and power in the initial construction

Have you Googled outdoor kitchens? You can get complete units for less than 1/2 the quote. And as oklouise suggests make sure you have the plumbing, gas and electrics organised.

Is the evaboard the benchtop? Cost depends on size and cost of appliances. Is labour for install included plumbing etc

Only way to compare is get other quotes.

Agree with Kate, get other quotes.
If you take away the expensive Artusi brand appliances from the quote, what are you left with....maybe a $500 cabinet.
And as oklouise has noted. Does this quote include the installation of electrical and gas, and plumbing points?

Here is another company to look at for quoting.

https://www.bluetonguebbqs.com.au/bbqs/cg-kr8-six-burner-bbq-sink-fridge-combo.html?gclid=EAIaIQobChMIluLzpJnS8QIVGcEWBR2jBwWbEAQYECABEgLEsPD_BwE

Or this from Harvey Norman

So with above examples, I would do your bbq after handover, just confirm with the builder that all gas, electricity and plumbing points will be installed.

Thanks guys 😄

Cant really comment on this without the plans, but it sounds about right as your looking for something custom as well as it being built most likely to be complimentary to your existing kitchen, inside area plus your builder is sourcing the joiner, fittings and trades.