Proof below. Overpay calculated. Original prices used

Sales

http://backpack.tf/id/76561198056155082?time=1380092400 ---> http://backpack.tf/id/76561198056155082?time=1380178800

1 bud + 10 keys = 1.6 buds

http://backpack.tf/id/76561198019061385?time=1380006000 ---> http://backpack.tf/id/76561198019061385?time=1381302000

Steaming Juju = 1.7 buds

Side note: I dont think the history updated, probably too quick for it to do so :/

Also taking low-end to get a range >.>

Conclusion

'Tis what I found, vote accordingly.

Help / Constructive Criticism / Additional Proof / Counter-Proof is ALWAYS welcome! >;3