I'm told that my 200A panel needs to be upgraded to 320A in order to support a HPWC at a full 80A. My current panel is basically full, since I have 240v air conditioning, oven, a hot tub, and electric clothes dryer now. There is also a solar power input feed. The ballpark quote I'm given from a Tesla-recommended electrician is $2500-3500 for the panel upgrade plus $545 to install the HPWC plus $17/foot for an 18 foot run. I'm also seeing what the local utilty needs but it sounds like a new meter at a minimum. I also want to put in a 14-50 outlet for futures/backup. Does the panel upgrade price range seem reasonable? I know there are variables but I'm looking for basic sanity check. Thanks.