Resuggesting as recommended by Bear

Proof below. Overpay calculated. Original prices used

Sales

http://backpack.tf/id/76561198044448294?time=1376809200 ---> http://backpack.tf/id/76561198044448294?time=1376982000

3 painted BMOC's + 6 keys worth in items = 1.7 buds (outlier)

http://www.tf2outpost.com/trade/13738086

http://backpack.tf/id/76561198044448294?time=1376722800 ---> http://backpack.tf/id/76561198044448294?time=1376809200

2.5 buds-worth of stuff

http://backpack.tf/id/76561198077727511?time=1376895600 ---> http://backpack.tf/id/76561198077727511?time=1376982000

2 buds + 4 keys = 2.2 buds

Offers (thanks to Bear for this counter-proof)

http://www.tf2outpost.com/trade/14715176 -

Offers:

Aces Stahl + 6 keys ~3

Cauldron Noir (old price but surely at your high end here)

Miami Birdcage ~2.7

Conclusion

All sales are 3 months old, but these are all the sales I could possibly find. Resuggesting as there have also been some higher offers. Vote accordingly.

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