best solar panel to buy is passive. No wires, No Batteries, No charger, No Controller, No maintenance, no costly expense of replacing batteries every 5-10 years. No HUGE up front cost...
Just basically 5-800 dollars and FREE HOT WATER! :)
Oh, and did I mention it's more efficient than photovoltaic? :)
As for costco is concerned would like to find someone that want's to split the membership bill in half. Yes, it's a whole day drive after spending a few hours in Kona and a few more on the beach. It's nice to go every 2 weeks or once a month just to get away. It would also be good to find someone that want's to shop there and can bring back items for others. Of course I would do the same for the other person.
Tho, I've had my G/F use my card many times ... They don't even look at the card ... It would royally suck to bring someones card to costco -- drive for 4 hours and get few hundred dollars worth of food on the belt and then have a cashier check the card. But so far 10 for 10 my GF always handed them my card and they didn't even blink.