For those who signed up, like me to the 1 year + 1 month (free) contracts for ZCash on Genesis Mining when ZCash launched, how have you found the experience?  The contracts have in the last few days expired/stopped.

I ended up with 27 H/s for $150 and earned about $340 USD over the 13 month period - so it paid for itself.  But spending $150 on a GPU would have returned more!