It has been warming my summer cottage in the winter time.
So the actual cost for mining has been little less, because I have benefitted from the heat.
Now that it is starting to be summer, I think I will shut it down for summer.
And that appears to be the only practical use case for lotto mining.
Because unlike in a traditional lottery, the "tickets" - actually USB stick miners and the like - are *much more expensive* than their paper counterparts. Considering that their prices can enter the "several dozen dollars" category, lotto-mining for its namesake only is not worth it - especially when you consider the odds of hitting a block are much lower than winning an actual lottery, owing to the enormous global hashrate.