Recommendations for cheap external door (supply and fit in Adelaide)

Hi, looking for a basic external door (can be semi-solid) supplied and fitted (not painted, I can do this).
Ideally with a frosted glass window. It doesnt need any shapes or patterns in the door, just plain.

Hoping to get it supplied and fitted for $500.
I have a deadlock already that needs to be fitted onto it.

I have got quotes from Doors Plus, but found them to be more expensive than expected.
The door size is 2060x805 which I know is not a standard size.

Any recommendations of who to get quotes from?
I would be happy to buy one from Bunnings if there are any local carpenters that could trim the sides and add to the top and bottom for a snug fit.

Thanks


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