Nice! Try as I might, I can’t find anything like that with Amazon’s search. It’s like they are deliberately excluding it from my results.
eBay works a lot better for me and even there I seem to have trouble. For example, I couldn’t find the replica lock sets when I searched over a month ago but when I searched again a week ago they popped up… along with a seller who has original genuine lock sets for $24.01.
On that note, you said you needed ignition and the lock set includes that along with matching tank and seat locks plus two Kawasaki-branded keys and extras (cable/striker for the rear seat). Maybe you can find someone local who bought a full exhaust and get their headers/exhaust for cheap. If it helps expand your options, I have seen people with a Ninja 300 exhaust slipped on to their 2008-2012 250 but I don’t know if the headers will swap too. Of course, the 300 will have an O2 sensor in the pipe for fuel injection where only some of the 2008-2012 250s did.