I am a CO Gold Elite and have a flight from CLE-RSW next week. When checking my reservation on co.com, I looked at the upgrade options and this is what I found under "Upgrade Using Miles". Since when does CO start charging miles and cash for upgrades of domestic flights???

Upgrade Individual Flights

Cleveland, OH (CLE) to Fort Myers, FL (RSW)
15,000 miles + $50 per person
Cleveland, OH (CLE)to Fort Myers, FL (RSW)
2 hr 45 mn| Boeing 737-800| First/Snack| 2 Seats Available

Fort Myers, FL (RSW) to Cleveland, OH (CLE)
15,000 miles
Fort Myers, FL (RSW)to Cleveland, OH (CLE)
2 hr 38 mn| Boeing 737-800| First/Snack| 9 Seats Available

Upgrade Entire Trip | 30,000 miles + $50 per person