Just got my survey for my Tesla Powerwall referral reward. Have planned to install it onto my solar equipt home, but I already have a propane generator and would really need at least one more Powerwall (likely 2 more) to fully power the house for any reasonable length of time and I'm not interested in spending the money to get the extra Powerwalls. So, I've been toying with just selling my referral Powerwall instead. Maybe use some of the funds to pay for the powerboost in my Model 3, invest the rest or use it toward debt...whatever. But, is there a market for these. Initial google search didn't turn up anything obvious. What are they going for? How much is it to ship elsewhere (I'd first try to redirect the shipping from Tesla, of course)?