Here is about the price as buying a rosewood V by Stiga (some reason a lot are deep sale atm) and once a sheet of Fastarc G1
the quick answer is wood is cheap, and there isn't much research on blades compared to rubbers. Most just clone each other
Would have been interesting how heavy their testing blades were. Clipper blades vary a lot in weight. A clubmate has one which weighs 85 gramms, mine is 97!