Well, given the company, this is an embarrassing question to answer. But since AMIR would also like to see people answer, I'll man up and answer it.
What I've spent on my system changes with time and, especially depending on my speakers at the time, can vary drastically.
And...do I count all the items I own or the ones in play in my system currently?
Note: Currency Canadian Dollars!
Currently in my system:
Thiel 2.7 speakers - $3,400 audiogon (to my mind one of the best bargains I've ever had).
Conrad Johnson Premier 12 monoblock amps. - $4,500 (I bought them late 90's so can't really remember, but that's a ballpark).
Conrad Johnson Premier 16 LS2 pre-amp - $3,500 (audiogon)
Benchmark DAC1 - $700 (audiogon)
Cables: $300 - mish mash of old interconnects, e.g. Kimber PBJ, and Blue Jeans speaker cable, so probably around $100 for speaker cable, likely paid couple hundred at least for all those old interconnects in the 90s.
^^^ That's a typical snap-shot of my system over the years. So it would be around $12,400 total.
BUT...I've recently bought new speakers AND within the last two years jumped heavily in to vinyl as well as buying subwoofer stuff.
So I can throw in:
Joseph Audio Perspective loudspeakers - $12,000 CDN (mint, fairly new dealer demo pair. Most I've ever spent by far on speakers! However I had several pair of small old speakers I've had around for a long time. I sold them off which helped pay for a bunch of the Josephs. And I'm lovin' them to bits!)
Transrotor Fat Bob S with acoustic solid arm and Benz Micro Ebony L cartridge - $6,000 (gulp! And that was getting a "great deal" used! But I'm happy).
JL Audio 110E subwoofers X2 $1,500 each (IIRC)
JL Audio CR-1 Crossover - $1,800 (used)
DSpeaker Anti-Mode 2 - $750 (used)
I don't even wanna add that up!
To my double-embarrassment, I have not even used the above subwoofer stuff yet! It's just such a mind-bending hassle that I can't get around to fully implementing them yet, and I just rarely feel the need for it. But I just can't sell it off until I finally give it a real try.