I’ve looked at:
And Many More
They ALL have outrageous prices- is there any other ones that have cheaper flights?
Flights cost what they do. The sites you mention usually show the cheapest options. There simply are no distress sales on airline seats.
One option you might try is to sign up for last-minute e-deals with the airline that has the most flights to your destination. You sign up for e-mail deals that give you the best last-minute deals on unsold seats. Depending on your destination, you might get a good offer. But maybe not. For example, seats between California and Hawaii are often totally sold out way ahead of time, and there will be no last-minute discounts.