Yeah, unfortunately there’s not a kit. If you’re in the US, ModularAddict has the panel + PCB for $25: http://modularaddict.com/catalogsearch/result/?q=crime
Synthcube has the metal Grayscale panel + PCB for $45: http://synthcube.com/cart/mxmxmx-ornament-and-crime?search=crime&description=true
If you’re ordering from either site and don’t have jacks, you’ll need to order Thonkiconns.
You’ll need a screen. I’ve ordered three of these without issue: http://www.ebay.com/itm/172141505278?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
You’ll need a Teensy 3.1 or 3.2. You can get them for $25 from Amazon, Mouser, Sparkfun, Adafruit, etc.
Finally, there’s a Mouser cart for all of the passives. The passives for O+C come to $30-40. The $15 DAC is what jacks up the cart cost (not to mention the higher quality op-amps on the O+C). Temps Utile costs about $20 less to build (No DAC, TL074 instead of the nicer amps, etc.). I built both simultaneously since there was a lot of parts overlap.
Really, if you don’t already have a significant collection of parts, the cost of building one from scratch comes pretty close to the cost of finding one used on Muff’s.
…Should we start a new O+C thread?