I bought a used Mark two printer from an owner whi...

I bought a used Mark two printer from an owner which was sold in 2016. In the same year, Markforged release Onyx material which is supposed to be compatible with Mark Two printer. In order to dissuade customer to buy second hand printer, they wanted me to pay ridiculous fees (8500$ US) to "upgrade" the printer. Be careful before making the choice to buy a Markforged printer, they may charge you unreasonable cost when your warranty will be over.