I know the CL & LSL westbound have been selling out because I've been monitoring them for last minute prices as I will be taking a last minute trip in August either by train or by plane.
If your someone who doesn't mind coach I need to go out to the Chicago area with my bike at the end of July and early August and just booked a lowest bucket coach trip (with such high fares if I had to take exact travel dates flying might of been cheeper if I didn't need to bring my bike), $87.30 each way with my NARP discount. Taking the LSL out and the Capital Limited back, with a 23 hour and 30 minute layover in DC no extra charge. The $87.30 that fare still seems really high, I feel like CHI to NYP coach low bucket was closer to $75 just a few years ago! It was definitely a trip where my travel dates weren't chosen by me but AmSnag, most other dates were more like $150 each way.
I just flew back from Colorado couldn't justify spending $250 to $300 on train tickets when flights were only $140 on JetBlue which included my bag!