How do your rates compare to an FBO?

Comparing Phoenix Flyer’s Archer to an FBO that charges $181 based on Hobbs time, and 1 hour of Tach Time averaging 0.8 hours of Hobbs Time:

1. Converting FBO rate to Tach Time: $181/0.8 = $226.25 per Tach Hour
2. Adding %8 sales tax: $226.80 * 1.08 = $244.35 per Tach Hour

We are $244.35 - $140 = $104.35 less per hour. But because of monthly dues you only realize a benefit if you fly more than two hours per month.