Disclaimer: This is just a guide to give you an idea of what your coin might grade. Often coins will grade higher on one side vs. the other. In example, it's possible for a coin to grade G4 on its obverse, but grade VG8 on its reverse. Also, this guide is not a claim that one's coin will obtain any grade listed if submitted to a third party grading service.
Now since you have seen the an image of the grades now you can see the coin values for that grade US Buffalo Nickel Values The images should help you make more informed purchases of Buffalo Nickels by grade and knowing the values for each grade will help a lot more.