My understanding is that once the order is placed with the factory, the price is fixed. I guess this means that the risk to price increases depends on the honesty of your dealer. If they accept you order and place it right away, you should be fine. If they are sitting on it until they have more build slots available to them (new month?) and then placing the order, there could be a risk of a price increase in that time. If this did happen, I'd be expecting them to take the hit, but if they are saying things like "there's a risk the price might go up", it might be a good indication that they're adding an extra delay to your order waiting for more slots to be allocated to them