Man that is the whole keyboard not the keycap
I know - why that when you can get
this shipped in Japan for less than 20,000 yen?
That 5,000 yen could get you almost a brand new set of 60 keys from EK itself - which you can dye and experiment by yourself.
5,000 yen for a CTRL key is just crazy man - and I thought I was crazy enough to bid on one red CTRL key on Yahoo! JP few months ago for 1,000 yen.
I say we go ahead with the Topre custom keycap thing man - for that pricing we could even get the Korean aluminium keyboard tenkeyless TypeSolid man