There are several things at play here that make this worth investing in. 
First, running a node can help the Bitcoin network - even if only a little bit. 
Second, the chance to run a quiet system that mines like this one is somewhat unusual. 
I think the quiet mining and good hardware is what explains the success of the R606's as well. 

At current Bitcoin prices, it is tough to say this would ever make a profit but most of us believe strongly in BTC and have for years. 
This and other small miners (like the R606's) retroactively become profitable as BTC goes up. 
I personally expect BTC to be 100K or more by August which would make this profitable. (Just my opinion.)