The total price is, indeed, $142.50 USD:
Fare (A1): US CHIFAY RXAUWA6Y fare (rules) , psgr type ADT $50.23
Tax: US Transportation Tax $3.77
Fare (B1): US FAYCHI RXAUWA6Y fare (rules) , psgr type ADT $50.23
Tax: US Transportation Tax $3.77
Tax: US September 11th Security Fee $10.00
Tax: US Passenger Facility Charge $10.50
Tax: US Flight Segment Tax $14.00
Total for 1 adult passenger: $142.50