Your math is off a bit. The panel you linked is 1.722m by 1.134m, or $34 per square meter. It's wild that it's in the same ballpark as a fence panel, though
uhh, you're right. I took their first listed dimensions, but if you look at the specs, it's your size. Anyway, same ballpark. I was actually considering using some second hand panels to build a fence, that's how I know.