Sorry about your salesperson's lack of factual information. I'd seriously look for another salesperson or MINI dealer. Get some recommendations from folks in your area using a North American forum.
MINI have a new update available for $225 US. Yes, I said $225 US
! Putting that in perspective, $225 will by you a pretty good basic Garmin or TomTom unit with map updates in the ~$50 US range!
If you MUST get Connected w/Navi, the update can be found HERE
I purchased Connected w/Navi and, given a "re-do", I'd have just ordered Connected.