The C-14 doesn't really have a filter, just a screen. By the time you clog that thing, you must have been pumping liquid asphalt into the tank. Really, it doesn't seem to be much, if any problem at all in the US. Modern fuel injected vehicles generally don't have fuel filters- if it goes in the tank, it should go through the injectors too.
As far as Kawasaki saving money on replaceable parts, the big savings is on the <no need to replace it> final drive.
Brian
The fiche shows the fuel for $256 at Ron Ayers. I am surprised that there is no replaceable filter. One of many reasons the C14 is cheaper than a BMW. I always replaced my fuel filter every year on my BMW. I never gave it a thought on the C14.
The explanation about the bike surging when the filter gets clogged may be and explanation for S. Ga. Rider's problem with the bike cutting off.