I was just thinking about it...I paid $57 for the 9500s, I picked up my Fidelio L2 for $100.....Akai 50x for $18, Superlux HD681 for $12 ETC...plus various deals on KZ (I have an ES3, ZS5 and a ZST ...less than $50 for all three, plus a grip of foam tips for $8) all that plus a Schiit Magni 3....heck, I have a set of T20RP getting the Modhouse treatment...my total cost for headphones, pads, comfort strap, Vmoda cable and Argon mods will be around $150....for a headphone some people consider to be the best version of a modded Fostex.
I haven't added up all my little headfi induced purchases, but it comes to less than $400...I know people like to say "welcome to headfi...sorry for your wallet"
but if you are patient, read a lot, ask a lot of questions, you can really do well for yourself in terms of great gear to listen to music on, and not go broke doing it.
I used to be into racing Miatas...the absolute best dollar to fun ratio you can have in racing,...it's the ChiFi of cars? and I STILL spent exponentially more on that than I have on headphones. I mean, I spent more than that for a set of polyurethane bump stops one time (shout out FatCat Motorsports!)
I have saved myself the heartache of spending too much money on audio gear that I am not totally happy with. I might not have spent as much as I have...but probably close to it...and I have yet to buy anything and feel sick about it later because it sucked.
What value can you assign to the ratio of how much you spent versus how happy you are with what you got. What is the value of looking at all your headphones and not having a single one that makes you mad to look at it because it's such a waste, such a let down? Use head fi properly and you are scoring high on that scale.