I'm looking for a 20 - 30 ft playadome (or equivalent) for an art…

I'm looking for a 20 - 30 ft playadome (or equivalent) for an art gallery/performance space at ephemerisle. Anyone have one they'd be willing to lend/rent out from June 5-11? I'm in the SF Bay Area.

You can see the domes here:

http://www.shelter-systems.com/playadomes.html

Thanks for any suggestions/pointers!