Resuggesting with a better range in mind.

Classified ads at time of posting:

http://m.imgur.com/8zQbWya

http://backpack.tf/classifieds/?item=Festive%20Backburner&quality=11&tradable=1&craftable=1

2*17 refined

1*18 refined (Has killstreak)

1*19 refined

2*1 key

3 buy orders at 10 refined

Bought mine for a key yesterday:

http://m.imgur.com/6wSqZca

Seller at 17 refined (~0.9 keys):

http://www.tf2outpost.com/trade/26102434 (~1 day old)

Sold without a bump at 15 refined (~0.8 keys):

http://www.tf2outpost.com/trade/26079138

Seller at 14 refined (~0.7 keys):

http://www.tf2outpost.com/trade/26101132 (~1 day old)

Buyers at 10 refined:

http://www.tf2outpost.com/trade/26099618 (~1 day old)

http://www.tf2outpost.com/trade/26054717 (~6 days old)

Buyer at 9.77 refined:

http://www.tf2outpost.com/trade/26017002 (~1 week old)

This is all I could find on Outpost that are valid at the time of posting this suggestion.