The definition of a rule is  an official regulation, code of regulations or set practice. An example of a rule is that a red light means stop. An example of a rule is an employer demanding their employees arrive at 8am.
The average cost for a fuel injector replacement is between $231 to $342. Labor costs are estimated between $168 to $213 while parts are priced between $63 to $129. Get a personalized estimate based on your location and specific car.
As far as getting the gas station to assist-- good luck! They will want you to try to prove you got your gas from there and it was their gas that caused the problem. Fuel injectors cost between $49 to $129 (roughly) apiece. Then you have to add in labor if someone else is doing the work. replacement fuel injector is about $78 - $91 each + shipping. Follow the link below. You need to install it yourself or find someone to install it for you.