SS255
Veteran
The website works fine. The flights you are referring to are express flights with Republic. There is no first class on the planes. Not that I want to blame the customer, but you might want to look closer next time before you write your diatribe.
The non-refundable coach fare is $298+tax. Pretty reasonable IMHO.
It apppears that PHX-IAH is the only route where CO mainline competes with US mainline and US 1st class is $20.00 cheaper for those dates.
EDIT: They compete PHX-EWR as well and US is $382 cheaper for 1st for those same dates.
I didn't notice that when I did my search. You have to click into the flight number to see the aircraft type, and I just automatically assumed that a 3:40 flight (inclusive of padding ) would be mainline. My mistake.