The flight was great, the pilot good. My complaint...

The flight was great, the pilot good. My complaint is about the company I feel ripped us off and is addressed in my verbatim email to the company and their response:
ME: "My husband and I took your tour in Jan. 1st. When we arrived we asked the clerk if I could sit in the front since I get motion sick in the back of cars. We were told we had to pay $50 each for front seating. Now, I get it if we had reserved spots in the front and were told in advance it is considered a premium seat. But, the flight was full, no one had paid extra for a front seat and you would have had to put people in front seats either way! We felt we were taken advantage of."
RESPONSE: "Thank you for allowing me the opportunity to address your concerns. Front seat requests are confirmed at the time of check-in and is based on the weights and balance of all passengers traveling on the flight. Front seat upgrades are also subject to availability. There is a upgrade fee of $50.00 per person to confirm the front seats. However, guests are not required to confirm the front seat and may very well end up occupying the front seat. As you stated, someone will sit in the front seat. Our upgrade fee allows our guests to confirm the front seat and not leave it to chance. The upgrade fee option is very popular with our guests. I am sorry you felt cheated by the confirmed upgraded seating. Please understand, you were not required to purchase the confirmed seating. Nevertheless, we appreciate your feedback and hope you enjoyed your time with us."