Hypothetically, any idea what would happen if the maintenance cost was higher than the return?
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Well they take it out of the mining profits so I would assume they would just keep the mining proceeds till it started getting to be more than the maintenance fees.  However their stated mission it to keep mining profitable for everyone so I have a feeling they would drop maintenance fees if it were to get to that point.  GawMiners and Zenminer seem to be a honest company, everything I've heard about them is they do right by their customers.
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Sorry been away a while as I got packed... I'm moving!

Actually if the price of maintenance overcame returns, they upgrade the unit to next highest payout setup....
Thats for the Solo mining Hashlets...

For the Prime Hashlets, they are launching some new features tonight apparently, and revealing the bulk of their long term project on Oct. 24th I believe...   

And yes, Josh & Company (Gaw/Zen) have repeatedly done right by their customers, even when it wasn't in their own best interests.