http://audio.wgr550.com/a/67152760/11-28-russ-brandon-discusses-ticket-sales.htm
"December has always been a challanege in this market, for whatever reason...."
http://www.sportsbusinessdaily.com/Daily/Issues/2012/11/15/Franchises/Bills.aspx
"Bills CEO Russ Brandon said, “It's a proven fact that in December in Buffalo, it's difficult to attain sellout status at our facility. December games are a challenge. But competitively, there's no place we'd rather play meaningful games than at home in front of our fans.”
http://www.buffalorumblings.com/2013/4/18/4240936/bills-2013-schedule-set-up-to-avoid-blackouts
"In 2012, the Bills had three games at Ralph Wilson Stadium during December. Not surprisingly, all three would have been blacked out had a local business owner not purchased 10,000 tickets for the game against the St. Louis Rams. Despite their fandom, many casual and diehard Bills fans find it hard to make it to an open air stadium in the middle of December in uncomfortable weather conditions."