The person I was talking to even said I should probably go elsewhere, she was embarrassed by the price. What a way to treat long time customer.
You will hear the same thing from most insurance companies / agents / brokers. Many of them carry other options in case their own underwriting formulas don't work out (Nationwide, for example, will sell you insurance through Progressive if their own underwriters can't get a reasonable price). I got the same thing from State Farm on my bucket trucks - they refused to write me a policy without liability coverage on the boom, and that was a $4,000 a year policy. Because I use these trucks in the orchard - and only need road insurance when they're being serviced - State Farm suggested I go through Progressive, who wrote me a commercial liability policy for $300/yr.
State Farm is a mutual insurance company, owned by the policyholders. It's not owned by investors, so you find there's a pretty tight alignment between value to policyholders (vs. shareholders) and corporate policy. Just as an anecdote, employees of State Farm aren't even guaranteed acceptance for insurance, don't get discounts, and must go through the same processes as any other customer (or so says a couple of the employees I know at HQ).
My price for the Model S under State Farm coverage is about $1100/year (it's important to know that I carry 2 other auto policies and a home policy with them, so discounts play a part).
As for teenagers and the Model S, most insurance companies have the ability to name an exclusion on a particular car for a particular driver.