I would assume. That 35 euros covers manufacturing a pen with logo. Covers some time to copy info to pen. Like labor. Covers shipping and handling. To dealers. Which you guys forget. I think 35 dollars is quite reasonable for a great sound. Style upgrade I mean. You already spent 4000 euros. What's another 35 ?
Though it may fix bugs it mainly makes the audya sound better Is this not worth it? If you say no. Then. Keep your money and don't buy the pen Luckily my audy4/5. Will already have this update.