I think 28 bucks ( best price I have found for my Iwata nozzle .2mm) and 11 bucks for a needle (again the best price I could find) a little steep, considering I can buy a complete new head for under 15 bucks for a Badger, and just the tip for under 5 bucks, and a new needle for under 5 bucks.
Since the tip is made of softer brass, and the needle is steel, the tip is what wears out first, and eventually it's going to need to be replaced.
Considering in the fact that most craft, and hobby shops carry Passche and Badgers, and their parts, and Iwata are a more specialized airbrush, I would always recommend to a new airbrush user to go with a Badger or Passche. My first airbrush was a Badger 150, which I used since 72, and now lives in Greece.... and can say the only parts ever needing replacment on it were 1 air valve, about 20 years ago, and tips and needles, and was still in use until it found a new home.
Admittedly, the bottom feeder are a pain to clean, and today I prefer to use my top feeders for ease of cleaning, and color changes, but again the trade off was learning to use a top feeder that spills easier than a bottom feeder. (Badger 100, and Iwata HP-B do not have covers for their top cups, and have smaller cups, but I can thin my paint more, use less pressure, and get finer details.
For a new airbrush user, I give the same suggestion that was given me, get a double action, learn to use it, because eventually you will want a double action, and get one that fits comfortable, and well balanced. The rest is all practice, and getting use to using an airbrush. An don't expect your airbrush to do things it wasn't designed to do.
I don't expect my HD head to do what my IL head can do, and I don't expect my IL head to do what my F head can do.
The nice part of a Badger, is I can change heads and needles in under a minute, and contiunue airbrushing as they soak in cleaner.
Airbrushes are like women..... I guess we all have our favorite kind, I prefer good value, and easy maintenance.