A $35K amp can definitely be worth it… I guess mine was $22K and well worth it. The only way to find out is to read professional reviews and to listen to it… with components you understand.
Having said that, Naim has never appealed to me. To me it strips them music out of the sound.. at least did a number years ago. But house sounds don’t generally change over time. Also, a rule of mine, proven repeatedly over fifty years is heavier is better. So I am suspicious. Any amp I buy will weigh over 100 pounds… preferably a lot more.