and where is the labor cost for laying the slabs? I only see material slab, some cutting (why actually? you buy the slabs correctly from the start) and material grit. but where are the installation costs? no one will lay them for free like that. and where are the costs for soil replacement? or is it just thrown onto the builders? as I said, half is missing. as someone else already wrote here, €80/sqm is a nice flat rate. and I say terrace slabs cost €100 per sqm including everything (see list above). I listed it separately on purpose so that the pricing is transparent and future builders can calculate their paved areas correctly right away. because that’s what it’s about here and not who got it cheapest. your price is either nicely calculated (because posts are missing) or done by yourself. but that’s not the point. if you do everything yourself, you certainly save quite a bit, but clearly less than you first thought. because most of it is rather the material (I was surprised myself). some things often don’t make much sense to do yourself, like for example driving the gravel for larger areas or distributing and compacting it. (if you have free access to the necessary equipment you do it yourself of course, otherwise it hardly pays off)
I can’t fully confirm that. Depending on the work involved, material makes up less than half of the price. Surely it makes no sense to dig out an excavation or larger earthworks with a shovel. Likewise, you don’t save much if you rent an excavator and container to do it yourself. For backfilling, however, you can save quite a bit (in sweat-producing physical labor) if you’re not under time pressure. Backfill sand doesn’t cost much, and the civil engineer must also order it to the construction site, "heavy equipment" and two men then cost quite a bit. You could well buy a used vibrating plate or dumper.
In this respect, you can only try to inform yourself in such forums about what is possible and sensible and then decide what you do yourself.