I agree, Dave. I'd charge at Costco for the hour and a half that it takes me to shop there, since it would allow me more flexibility with respect to what other errands I do. It would be a great thing for them to be out front on this!
I had a very helpful conversation with the Asst GM, Dean, at the Costco in Carmel Mountain about 4 weeks ago. We talked about the J1772, the Leafs, and I told him that San Diego was part of the pilot on the EV Project with the free chargers, etc. He took the time to understand what I was talking about (even took a few notes) and then told me he would follow-up with Corporate to let them know we had some demand here.
He then followed up a couple of days later by email letting me know that the corporate folks were looking into it, and they were trying to figure out how to manage some of the details (can they get a unit that gives a discount to Exec members, etc, can they / do they want to try to limit it to Costco members - the way the gas pumps are set up, etc etc) It sounded like a discussion was happening, with no short-term time frame in sight.
So, I'd say it may be worth it to email Costco corporate directly, but also visit with the individual store managers when you shop. If the managers all realize that we're in there shopping (and we say hello every time we're in) they will realize that they really do have a fair amount of members with EVs and they too can help explain the demand to the decision-makers.
Last time I was there about a week ago there were two other Leafs in the lot!