Hello all traders! This thing's price should be "revised".

Median price

(from web sellers 1 key 5.44 ref)

http://www.trade.tf/price/567/13/None

Steam Community Market price

Solds about 2eur (Hyperlink)

http://steamcommunity.com/market/listings/440/Haunted%20Buzz%20Killer

Visualisation of sales:

http://s27.postimg.org/64ro03t8j/buzz.png

Classifieds (At the time of posting the suggestion):

2x 2 keys

http://backpack.tf/stats/Haunted/Buzz%20Killer/Tradable/Craftable

Unsolds

2 keys

http://www.tf2outpost.com/trade/22570123

http://www.tf2outpost.com/trade/23024912

Unsolds as part of haunted set

http://www.tf2outpost.com/trade/22883338

http://www.tf2outpost.com/trade/22840782

http://www.tf2outpost.com/trade/17533344

Unsolds - asking for offers

http://www.tf2outpost.com/trade/22757339

http://www.tf2outpost.com/trade/22925131

http://www.tf2outpost.com/trade/23036199

Buying

(Me - ready to pay 1 key for it)

http://www.tf2outpost.com/trade/23051235

Solds

1 key

http://www.tf2outpost.com/trade/22675144

Sold at least for backpack.tf price

http://www.tf2outpost.com/trade/22859959

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Commentary

Being rare item, it lacks sales. Currently sellers try to sell them as sets or individually for around 2 keys. They seem "out of luck". However, few sales seems to appear in 1 key range. I am ready to pay 1 key for this item.

Verdict

By taking in account the median price, steam market price, occured sales and price demanded by users, i suggest that price be around 1 key at the moment.