PV should only cost around ~€60, correct?

So yes, but the whole system requires labor and different accessories to set up. I’d assume 200$ each for mounting parts and labour and interconnect parts and labour. Do they charge separately for the switch to the grid and other things, or does that 850 per panel include the rest of the stuff?

It seems high, I would expect 4-6x the cost of an individual feature for turnkey projects, but then again I’m not in PV construction, I’m in security systems, and I’m in Canada not Europe.