Updating a 10 month old price. Please note that sales listed are for clean executioners only, as the dirty ones go for half as much.

There is only 1 clean secret executioner on the market right now(1 of 2 clean ones in existence if I'm not mistaken). Got 2 recent solid sales on this bad boy.

http://www.tf2outpost.com/trade/13936612

Cannot find anything it sold for, probably cash.

http://www.tf2outpost.com/trade/13770464 - owner is willing to do 50

Sold for Roboactive Executioner(~30) + Miami Executioner(~17.8) = ~47.8 buds

http://www.tf2outpost.com/trade/13208311

Sold for Secret Waxy(~14) + Secret Anger(~25.4) + Ghosts Private Eye(~3.2) + O. Fire Stahl(~1.2) + Planets Veil(~3.2) + Steaming Ze Goggles(~16 keys) + Flies Hotrod(~20 keys) = ~48.7 buds

Proof: http://backpack.tf/id/76561198020749387?time=1375340400 -> http://backpack.tf/id/76561198020749387?time=1375426800