Albert's limits are out of this world, IMO. Twinsdad and Fineberg are absolutely correct that you don't have to spend megabucks to have gorgeous sound, if you buy used/demo and do lots of auditioning and careful component- and cable-matching--a lot of which has to be done trial and error, unfortunately, which of course contributes to the used/demo market for the rest of us. For myself, after years of listening, lusting, buying, selling, and overspending, I have settled on a tube system that is the best system I have ever owned or listened to--but I don't live in a big-time audio store area so I haven't listened to the best of the best. My system is listed in virtual systems on this site and retails for around $50,000. The limits I would place on various components are based on my experiences building this system over the past 5 years and are as follows (retail):
amp $8000-10,000
preamp $5000-7500
speakers $15,000-20,000
CD playback $8000-10,000
vinyl playback $8000-10,000
tuner $2000
cables and power cords $5000 total
stands and racks $2000-3000
power isolation/conditioning $3000 total
I know I could put together a DYNAMITE system to live with for the ages at the low end of these ranges! I guess it would look very different from Albert's, but to each his/her own, of course! One more thing: I spent $13,000 on a high-end fancy amp a couple of years ago and it was the worst purchase I ever made as a spendthrift audiophile (with a long history of ridiculous purchases). My current amp (ARC VT100 Mk III) cost me $4500 (I bought it right before the price went up $1500) and sounds/operates much, much better. Thus I know I will never spend anywhere near $13,000 on an amp again, even if my fortunes change and would allow for it in the future.
Sarah