I'm putting it at this price because it seems to be 1 of 1 (0 of 0 on stats.tf), and the following trade below should set it.

Note: i redid this suggestion based on feedback on other users/I miscalculated price of the items.

[url]http://www.tf2outpost.com/trade/11542447[/url]

Here's our trade.

[url]http://i40.tinypic.com/6i4qjm.png[/url]

This is my inventory history showing the trade. I traded out two buds pure, + 2.5 keys worth of items, so 2.1 buds.