I went there to replace a key, the price was $10. ...

I went there to replace a key, the price was $10. Unfortunately 2 days later I locked that key, and my main key in the Jeep... So off to spend another $10 for another Valet key. This time, I saw a different person in parts (Tim) and he charged me $15 for the same key. I confronted him, and he lied.

I am on my 4th Jeep, and feel if I cannot trust the parts department on a small item, why would I ever buy a car from there?