Which exchange trades cryptopunks
I've been mesmerized by this project since I saw it come out. I've watched prices increase, literally, 80000% (eighty thousand percent). I don't think the growth is over yet, either. The market cap is likely now around 1.1 million if you consider the average sale is $110 and there's 10,000 punks in total. The crazy part is I don't think it's even close to done. I watched discord go from 3-4 people to 100+ in a couple weeks since the projects inception.
They're not on an exchange because each one is unique... I'm not sure how you'd exchange them like that. That's what makes it so different. Every single punk is unique and holds it's own value. One punk that's particularly rare went for 10 ETH (
http://www.larvalabs.com/cryptopunks/details/6089 .. you can see the tx on the page).
Easiest way to buy or bid on one that's publicly available is using the Cryptopunks contract on MEW and browsing
http://www.larvalabs.com/cryptopunks to see what's available. The discord is always active with 20-25 people at any given time as well if you want to try to negotiate with someone.