I totalled up the cost of my 12 gallon nanocube setup right before the change over to the aquapod, came out to about $1400 USD, and now that I have upgraded and added more my current system is about $1900 USD
Edit: BTW that Rockpool shrimp rocks, and I really wish that I could get my hands on a chiton like that, I'll bet film algea runs when it sees that thing coming.