There are various qualities and options. A dealership can have cheap products and only a partial hood installed for $320 bucks. On the other hand, you can get the best products available: SunTek or Xpel Ultimate, full everything, for over $1500.
Your question is slightly too vague to answer precisely.
This info is required:
Vehicle to be applied to:
Age of Vehicle:
Condition of paint on parts to be protected:
Intended length of ownership of vehicle:
Complete or partial hood desired:
Complete or partial fenders desired:
Which quality of product desired: