Presuming a standard domestic penalty fare above E, OP faces $200 +/- fare difference. Why not at least figure out the fare difference. Could be less and that acts as a credit against the $200.

OP has a classic hidden city ticket and US is wise to this stuff.

As OP has chosen not to provide his itinerary (what's with the secret origins and destinations?) can't advise as to what other options might exist or what US might to in IROPS.