As a general rule, just about any business will quote you the lowest price they can, so they will tend to include rebates and any other point of savings that they can. It doesn't sound dishonest to me, but there are other options to consider and I wouldn't be suprised if they still have room to move on the price of a 2017.
This is a good site for reference for a generally good cost, and they have plenty of 2018's for comparisons purposes...
https://www.imotorsportsinc.com/defa...18&make=can-am
If you have a bad feeling about the dealership, then there is a decent enough chance that you are right.