will sell in CA. They'll ship, or you can drive down to Laguna to pick it up in person if you're cruising around OC. PCC Motor
in Rancho Cucamonga also sells to CA and will ship or let you pick-up. They sell kits on eBay under the Member ID inu521
I also have a kit on order from sun-thing28
which is a direct ship from China at $196 delivered for an 80cc kit. The price is about average, but the wait is about 2 months. I ordered it before I found the local vendors who would sell to CA, and I'm still waiting. They seem to have good feedback and have sold a bunch of these kits, so we'll see what happens. It looks like I'll be getting it sometime around Halloween.