yes 6 cog box in all st170,full leather is an optional extra...i think
i paid £11500 with 12000mls on the clock but i got all opional extras,full leather,heated seats,air con front lamp washers,heat front screen and everything else i cant remember,
the guy paid £20,000 for my car when new 15 month ago, he was that desperate for the new mini he let me have it for £11,500
insurance wise got to http://www.esure.com/index.jsp?ref=lgotxt01
and get yourself a quote,i did and i am as you 33yrs young max ncd,st170not modified,garage full comp £346 with the missus to drive also
anythings else i can help you with give us a shout

just found out a bit more info for you on the options and what they cost new

Standard Features
Air Conditioning

Power Heated Mirrors
Interior Sensing & Perimeter Alarm
Side Airbags
Traction Control
Anti Lock Brakes (including Rear Disc Brakes)
6006N radio/ 6 x CD in-dash autochanger



Options £ inc VAT
Metallic Paint £275
Rear Spolier £250
Power Roof £400
ESP £750

Custom Pack (Driver/Passenger Heated Recaro Midnight Black Lauren Embossed Leather Seats, 9006 6 X CD Audiophile Sound System and Metallic Paint) £2000

Comfort Pack (Electronic Automatic Air Conditioning, Quickclear Windscreen, Xenon Headlamps) £750