Fostex TH900 is ¥157,500 pre-order price in Japan - http://global.rakuten.com/en/search?pf=&pt=&f=0&fs=1&vm=2&sm=0&st=&tl=0&k=fostex+th900
Yuin OK1 is $240 at head-direct.com.
Jays q-Jays LE is ₤173.57? - http://www.pjbox.co.uk/shop/shop.php?action=full&id=3736 = $275.9 USD
FitEar Private C435 is ¥157,500 - http://fitear.jp/music/product/earmonitor.html
M-Audio IE-40 is ¥86,366 - http://global.rakuten.com/en/search?pf=&pt=&f=0&fs=1&vm=2&sm=1&st=&tl=0&k=m-audio+ie-40, you'll need to find the USD RRP of this one haha!
Shure SE535LTD(-J?) Special Edition is around ¥50,000 in Japan, I can't seem to find it on shure.com?
多摩電子工業 (Tamadenco) ING Sound Labo S1210HR - RRP ¥6,980 = $90.53 USD - http://www.tamadenco.co.jp/contents/sproduct_l_011.html
Sumajin Clip-On is $45 - http://www.sumajin.com/Movingmusic/sumajinmovingmusic04.html
Rooth LS8 is 5980 CNY, this was a sub-division of Gui Ling, however it's now an independant company. I believe all Rooth and most Unique Melody products were created by Gui Ling at one point in the past.
Atomic Floyd TwistJax AcousticSteel is ₤139 - http://www.atomicfloyd.com/twistjax
Jesttax not sure which product - http://www.jesttax.com/index.htm
Microsonic Music - http://www.microsonicmusic.com/universal-music-monitors.html
This is exhausting ...