Hehe. My 335 has <25,000 miles as well. Mint Condition.
Insurance = $700.00 per year full coverage
$500,000/300,000 liability
$100 Comp
$500 Collision
Geico
ETA: Just Oil Changes at dealer and simple Maintenance like Spark Plugs/Filters, etc which I do myself
And 1 DSC Module=$2,100.00...