That sounds like a really good price for machine + frame. Isn't the MSRP for the machine about $7,500 and the from $2,000?
Our Bernina dealer lets 820 and 830 users use demo models for their mastery classes if you don't want to bring yours in. AND they offer trunk to classroom carry service if you do. Since the classroom is upstairs, that is a huge help, even just bringing in a 430...