Here is a business proposal for anyone wiht enough dough: Get a license for S-300 rotorblades and reconfigure them to R44 format/dimensions/grips and get them STCed. You'll become obscenely rich, as the RHC apparently can not manufacture sustainable blades.
For all the years I lurk at PPRuNe I keep reading of -4 bladses vs. -7 and delamination and what not. Other companies have horrible devliery times (S-300C rotormasts need a US lawyers "afterburner" to make shure you get them after having ordered them a year before you need them) a BO105 wind shield wiper gearbox (sans motor) is 15.000 € from Airbus, a Gazelle clutch triples in price on its way from the serbian(?) manufacturer to Airbus Form1-issuing dept.
But only RHC definitely is not able to manufacture blades for its fleet, that last.
That is a fact validated over many years and product revisions. Where are we now, btw? -12 or even -15?