Yet another resuggest

"So sales here are 30, 34, 38, 40 (pure), and 45. I would probably go with 34-40 or even 34-45. 30-38 is a bit low here."

Sale 1:

Added 4 keys for C9 Pirate Bandana(25) + Aus BB(17, check OP histories for matching):

http://backpack.tf/profiles/76561198094693231?time=1448784000

http://backpack.tf/profiles/76561198094693231?time=1449302400

=38 Keys

Bandana was valued at 25 Keys as shown here:

http://www.tf2outpost.com/trade/27462667

http://www.tf2outpost.com/trade/27457004

Being resold @ 40, makes sense

http://www.tf2outpost.com/trade/27540439

Sale 2:

Sold for Miami Inspectur(18) + OF BIlly(12):

http://backpack.tf/profiles/76561198152444230?time=1448092800

http://backpack.tf/profiles/76561198152444230?time=1448179200

=30 Keys

Billy:

Added 1 key in sweets for a C9 Base Metal(14, check its suggestion):

http://backpack.tf/profiles/76561197987925000?time=1448265600

http://backpack.tf/profiles/76561197987925000?time=1448352000

=13 Keys

Inspectur:

Sold with 1 Key in items for what quicksold for 19 keys:

http://backpack.tf/profiles/76561198172760565?time=1446361200

http://backpack.tf/profiles/76561198172760565?time=1446451200

=18

Polar's notes:

http://www.tf2outpost.com/trade/27638803 - lantern whoopee. That's outdated but it was in turn sold for a spec ks aussie med gun which will be ~34 keys

http://www.tf2outpost.com/trade/27540439 - this sold for 40 pure (used the keys to buy a scorching brain bucket for the same amount)

http://www.tf2outpost.com/trade/27676916 - sold for blizz modest + planets outta sight + 2 keys? The histories don't match perfectly, but both the buyer and sellers exchanged exactly those items. Should be capped at the b/o of 45 keys

Taking 30 and 45 as outliers, rounding 34 to 35.