3 month-old price.

Sales:

http://www.tf2outpost.com/trade/18865087

-wanted 5 buds

-panama+miami headsplitter bought scorching noble: http://www.tf2outpost.com/trade/18881620

http://www.tf2outpost.com/trade/18678190

-wanted 6 buds

-panama+vivid veil+good sweets bought scorching belt: http://www.tf2outpost.com/trade/18971031

http://www.tf2outpost.com/trade/18642088

-wanted 6 buds

-sold for ge robin+kaw anger (outdated)+bubbling bloke+5 keys=6 buds due to b/o, outlier

http://www.tf2outpost.com/trade/18414021

-panama+gifted burning mirror bought scorching stovepipe: http://www.tf2outpost.com/trade/18634273

-looks like outlier

http://www.tf2outpost.com/trade/17976348

-wanted 5 buds

-sold for 5 buds also proved here: http://www.tf2outpost.com/trade/18377903

http://www.tf2outpost.com/trade/18354159

-(middle one) wanted ~5.3 buds each

-sold for sf scatter+ks sf sniper+s. pan (also shown from bp history): http://www.tf2outpost.com/trade/18660528

-~4.2 buds

-(duped left one) appears to have sold for hearts slug+beams pe: http://www.tf2outpost.com/trade/18813648

-he overpaid the b/o and was willing to add a lot to the slug as seen on another trade

-~5.3 buds

-(duped right one) sold for 5 buds

-buyer's bp:

http://backpack.tf/profiles/76561198050310308?time=1395730800

http://backpack.tf/profiles/76561198050310308?time=1395903600

http://www.tf2outpost.com/trade/18226420

-duped, sold for 4 buds+10 keys=~4.5 buds

-not a quicksell compared to other sales

http://www.tf2outpost.com/trade/18037844

-duped, quicksold for 4 buds

-price: http://www.tf2outpost.com/trade/18031798

-duped, quicksold and lowest of sales so not including in range

Current trades:

http://www.tf2outpost.com/trade/18970396

-b/o of 6 buds

http://www.tf2outpost.com/trade/18935313

-wants 5-7 buds

-notable offers:

harvest gatsby (slightly outdated)+pe festiviser=~5.4

http://www.tf2outpost.com/trade/19026349

-duped, wants 7-8 buds

http://www.tf2outpost.com/trade/18992618

-wants 6 buds

Sales: 4, 4.2, 4.5, 5, 5.3, 6

I'm not including the sale of 4 in the range, dupe sale and a quicksell so safer not to include it. Not rounding off here as I would have to use 4 which is a quicksell. So 4.2-5.3, with an offer also at 5.4 just to justify the high end a bit more.