Don't know how you got a sqm price?
We have been given a linear meter price, which is the same for straight and corner elements and that company is not the cheapest. We have a slab of 160 + 22 sqm and in that case, it takes (not so expensive I think);
Edge element type straight, L=1200, 56 pcs (67 lm) 234 kr = 15678 kr
Edge element type corner, 1200x600 12 pcs (15 lm) 234 kr = 3510 kr