http://steamcommunity.com/market/listings/440/Haunted%20Sir%20Shootsalot -- ~15 listed for <=1 key, plenty sold for around 1 key.

http://backpack.tf/classifieds/?item=Sir%20Shootsalot&quality=13&tradable=1&craftable=1 --

5 @ 1 key (2 of these sellers are included in the OP sellers below)

1 @ 1 key + 3 ref

1 @ 1 key + 4 ref

2 @ 1 key + 5 ref

Sellers:

http://www.tf2outpost.com/trade/23408668 -- 1 key + 6 ref (1 day old)

http://www.tf2outpost.com/trade/23437561 -- 1 key + 6 ref (brand new)

http://www.tf2outpost.com/trade/22757339 -- 1 key + 5 ref (1 month old?)

http://www.tf2outpost.com/trade/23385032 -- 1 key + 4 ref (2 days old)

http://www.tf2outpost.com/trade/23396523 -- 1 key + 4 ref (2 days old)

http://www.tf2outpost.com/trade/23390697 -- 1 key + 4 ref (2 days old)

http://www.tf2outpost.com/trade/23429569 -- 1 key + 3 ref (<1 day old)

http://www.tf2outpost.com/trade/23407824 -- 1 key + 3 ref (1 day old, poorly bumped)

http://www.tf2outpost.com/trade/23419840 -- 1 key + 1 ref (<1 day old)

http://www.tf2outpost.com/trade/23399080 -- 1 key + 1 ref (2 days old, poorly bumped)

http://www.tf2outpost.com/trade/23408629 -- 1 key (1 day old)

http://www.tf2outpost.com/trade/23415452 -- 1 key (x2, 1 day old)

http://www.tf2outpost.com/trade/23409698 -- 1 key (1 day old)

http://www.tf2outpost.com/trade/23432181 -- 1 key (<1 day old)

http://www.tf2outpost.com/trade/23416382 -- 1 key (1 day old)

http://www.tf2outpost.com/trade/23414758 -- 1 key (unbumped)

http://www.tf2outpost.com/trade/23378515 -- 1 key (3 days old, poorly bumped)

Sold:

http://www.tf2outpost.com/trade/23347854 - 4x at 1 key (one of the buyers [listed above] is re-selling 2 at 1 key)

http://www.tf2outpost.com/trade/23435297 - 9 ref

http://www.tf2outpost.com/trade/23360795 - 1 key