Need help dealing with insurance total loose

I been in car accident rare ended not my fault I will be buying a car back from insurance I have felling they are low balling me price they give me for GMC Acadia 2013 200 thousand km is this as they state If you keep the vehicle: ACV $13,500 less salvage $5983 = total $7517 I think 7517 is low Damge estimate was $9k car is mechanically fine and bumper and lift gate bit damaged I did my research and I found in my area I am getting those prices for my car with damage over $2000 auto trader say low $15.130 high $17.706 also looking at GMC Acadias 2014 with lower trim then my higher Km come to $12k not including taxes and licensing I did vrm Canada and I am getting wholesale 1150 whole sale 14150. Am I getting screwed here? and if yes how can I word this how can I ask for more money if in buying the car back basically I wore track saying I think fair price is 10 and the car insurance keeps 5 k