Yes, they are "good", but 200h of print as lifetime (if that ends up being confirmed, I just re-launched the print) makes them a consumable. One can't ask for Eur 10-15 per unit in this case, considering that they don't cost more than Eur 3 to produce (way less actually, and even Swiss made). I'm going to ask a (Swiss) manufacturer for a quote, for 1000 parts. We'll see.
Technically:
It is a design fault (or too quick a compromise) to subject a PTFE-matrix component to a load, and 200°C, while stating that the ideal extrusion temp is around 210°C. The glass temp. of PTFE is in the 140° area; works on the subject (strong softening >140°C) abound (1).
Reinforced or not will only delay the issue, never solve it.
In other words, the hot end should be re-engineered to allow for a strong temperature gradient; metal part homogeneously at >200°C, coupler <<140°C. This can be done with proper heating and cooling circuit.
(1) Example: http://www.ewp.rpi.edu/hartford/~peetrm/Other/ME%20Project%20References/The%20properties%20of%20poly%28tetrafluoroethylene%29%20%28PTFE%29%20in%20compression.pdf