If you live in one of the qualifying states (CA is included), http://www.tonikhealth.com has fairly reasonable quotes for "catastrophic" insurance -- $77/mo for their base plan.
If you live in CA, I'd recommend talking to someone at allhealthplans.com. It's free (the insurer pays them), and they have great information about all the competing companies--no bs, excellent help. I've sent lots of people their way.