Sounds like this might be a shady dealer. Tint already comes with the car. Taxes and license fees are usually not included with the price of the car, unless you can agree on an OTD price that includes everything. Best advice I can give you is to shop around, and try to do it over the internet to save yourself a lot of time and frustration. Good dealers will usually sell you the car at invoice (or below) without haggling or pushing extra crap like tint, body wraps, or underbody protection.