Where do you get Heat Block and Heat Break for mk3s?
do you have good options from amazon where you buy from or do you get it from prusa or other places?
Which country are you in mop?
ahhh....did not consider Printed solid, will check
Sorry, cant help you in the US, I'm in the UK, but looks like Bobstro has already pointed you to the place to get genuine spares.
Printed Solid is a recommended supplier.
On Amazon - search for E3D. They are obviously also recommended - but be careful of cheap knockoffs.