Twern't expensive as blocks are dead cheap and the labour was my son-in-law who don't charge much! The concrete was reasonable too. The slabs we got when we got them for the patio that adjoins it and they weren't expensive either. There is great continuity from the back door over the two patios.Sounds nice but I think piles would have been cheaper plus you would have had some storage underneath
Wood is one HELL of a flipping price, and has been so for ever, which is why we brought all the wood we used from the UK, including the decking for the other part.