The last 5 days have involved me watching SLC - RDU dwindle from 9F at the PM window down to 2F with 36 hours to go.
FCM has bounced between $161 as high as $465 and has settled at the moment around $250.
IMO not worth it for a 3 hour eastbound (C+ will be just fine) but I'm assuming at this point I've been FCM'd -- otherwise I can't explain how we went from 9F to 2F after the DM, PM, and GM windows have come and gone and I didn't clear on a last minute very expensive M fare (the one time I yearn for my UA 1K days where YBM fares cleared at booking)