you could always DIY
start of the year my backyard was bare when I had the patio put up (6x7)
and I wanted timber decking (8.5x6 and got quoted well over 12k for most places using batu wood, concrete footing, stainless steel screws etc, so
I did it myself for 2.5k! , this includes a strong jarrah frame , stainless screws , batu wood , 1ton of concrete for the 40 stirrups (footings) etc.
it took a good 3 months to do it and a lot of hard work leveling the block by hand with a shovel but this is the result for someone who has never built anything before:
