From the webUI I would say 0.2.3...

Also, he's wasting some (very little) energy by using 4 pi's when you could easily use two. However I did find it interesting he's got 88 erupters at 351watts, as I know my setup of 32 erupters + fans, fans, fans, fans, fans (10x fans) one a single rPi sits at 105-115watts. So just doing some simple math, if I triple my farm to 96 erupters (including adding another pi, plus fans to match growth at the current rate of fans). I should be at 315watts to 345watts... hrmm... am I missing something here, where's his power draw coming form?

96 erupters = 32GH/s+, at the current price of .11BTC per erupter, 10.56 BTC (+cost of fans, usb hubs, rPi, etc...)

Now, 4 ASIC Blades I've clocked using 346watts (on a 1200watt PSU, including a wireless router & raspberryPi & 6 fans) ... they average 40GH/s however after running for awhile pick up to around 50GH/s (so far seen a max of 53.4GH/s out of the 4). At the current price of 3.5BTC (4x = 14BTC).

4 blades = 40-53GH/s, at current price of 3.5BTC per blade, 14BTC total + cost of PSU, fans, rPi (if you want, not necessary, though I think it is...)

If you add in the cost of USB Hubs, it makes up the extra 3.44BTC needed to buy said blades, where you have more hashing power and the power to hashrate is better than with erupters. Hmm... I was going to go to 96 erupters, but after doing this, it just seems more logical to sell my erupters and buy more blades and/or Blue Fury Miners.