If it was floor tiles at £10 a box i could almost forgive it. But £75.00 a metre quartz? It's nuts. In fact it's a real insult. Happy to spend that on the tiles but wants to pay less than minimum wage to have it fitted.
A mate of mine, his boss wanted me to fit £100 a metre porcelain tiles on a floating floor with wired UFH. Told him I would only do it if he ripped up floating floor and either he could prepare floor or I would with a suitable substrate to tile to. He wouldn't budge as the builder had fitted the floor and said it was ok. He got in 3 guys to tile 30m and it took them 5 days. Everything on that job was ticking the boxes for failure. My mate told me they had to buy 6 extra bags of addy to make it level!!!
Why spend that much on tiles and scrimp on prep and fitting, it's beyond me.