Only 3 BTC till 1 sat, damn. Lets hope there is _some_ news soon to push DGB up a bit (don't want a pump), because I really don't want DGB to drop that low.
I've done a quick mathematical check, and, with its current diff and network hashrate, break-even for electical usage only (using US national electrical costs and excluding hardware investments) for Groestl is 70 satoshi. For example.
With its current diff and network hashrate, break-even for electrical usage only (using US national electrical costs and excluding hardware investments) for SHA-256 is 32 satoshi.
So, according to these two samples (haven't had time to do scrypt yet, but I think it's probably higher than SHA-256), anyone selling at current levels is losing money in the process (very smart - NOT) . . . unless they're mining in Iceland that is.
http://www.zerohedge.com/news/2013-12-25/trip-through-bitcoin-mines