AVR/AVP/Amp probably 20-40% of speakers..
But I know friends who spend $7,500 or $4,000 on Integrated Amps and $2,000 on speakers also.
It’s not just about cost ratios. It’s about that total satisfaction feeling.
If I bought some B&W 800D, Revel Salon2, KEF Blade, Legacy Audio Aeris, RBH SVTR, etc, I wouldn’t want to use some Emotiva amps.
I would use amps like ATI, Bryston, Anthem, Parasound, Classe, Pass Labs, Krell, etc.
I use a $2K Yamaha AVR with my $9K RBH speakers, so my AVR-Speaker percentage is 22%.
A friend is spending $9K on Preamp/Amps and $12K on speakers. His AVR-Speaker percentage is 75%.