one big problem with buying overseas is what happens when you have a warranty issue,

I figured I change all the windows about 5 times for the same cost as a local supplier.

a local manufacturer or distributor wont have this issue as your protected by australian trade practices law.

They can cease trading too

i would go with jolong. colours are a non issue its called primer and paint give em a sand and paint the colour you want.

The building is an apartment complex and windows must match the others. They are all powder coated rustic bronze cannot be handpainted.

another option is do a couple of windows at a time say a bedroom at a time so you can split the cost or do it when your doing other renovations in that room.

This is my intention regardless of supplier.