There are way too many factors that go into pricing...age of insured and location being included. I'm a young(ish) male (31) and I pay $550 every 6 months for the two vehicles in my sig (not the bike...separate policy). I have 500K in liability and $30K medical each person, but I opted for the $1K deductible. My coverage is better (minus the deductible of course) and I pay less even though I assume I am quite a bit younger than you and therefore a "higher liability". Why? My guess is because I live in ND. I only say all this to point out that it's really hard to compare rates person to person.
Ahh yeah, ND versus the Atlanta metro area, that is full of great, well-meaning people.
Also, I have over $300k in liability when you count the umbrella that is tied to everything. Having the $1k deductible might be saving you some, I bet it's not over a $100 savings per 6 mo for me.
I'd say $550/6 mo for two cars is a good deal in today's dollars. I paid nearly $90/mo for everything I've owned for a long, long time and have just now gotten into the $50/mo category, and I have some serious discounts.
I think after you've hit 30, age doesn't matter much.
One thing I'd love for insurance companies to do is offer deep, deep, deep discounts if you pass a comprehensive driving exam based on written testing and simulator testing, NOT monitoring your driving habits. Let's see some real world reactions and habits. I don't care if you take a turn too hard or run 82 mph on the interstate when there's not much traffic. I care if you play with your phone in the left lane on the interstate....