I bought a Costco membership last week just so I could use the auto buying service to get the Clarity PHEV and ran into the same problem. I'm in the Bay Area and still looking for the best deal on the base model. They referred me to AutoNation Fremont without the pre-arranged pricing, who initially gave me a quote for around $1,000 off MSRP, then called to say I could get the base model for $4000 off MSRP. But I've received lower quotes by contacting other dealerships directly. I also tried changing my zip code around in the Costco Auto Program system and eventually got matched with Mistlin Honda in Modesto for a pre-arranged price, but they ran out of stock and I still haven't received a quote.