So, a year and a half-ish later... let's price this.

SALES:

http://www.tf2outpost.com/trade/19010089 Sold for C9 YWN (3.2)

3.2 * 0.9 = 2.88 (rounding to 2.9)

Histories:

http://www.tf2outpost.com/item/440,2510772057,30002,5

http://www.tf2outpost.com/item/440,2510772074,600,5

http://www.tf2outpost.com/trade/18486963 Sold for DP Titanium Tower (Unpriced, mini at 2.4)

2.4 * 0.9 = 2.16 (rounding to 2.2)

Histories:

http://www.tf2outpost.com/item/440,2510772057,30002,5

http://www.tf2outpost.com/item/440,2444481302,30008,5

DP Tower mini:

http://www.tf2outpost.com/trade/20075641 Sold for KaW Chieftain (2.5)

2.5 * 0.9 = 2.25 (rounding to 2.3)

Histories:

http://www.tf2outpost.com/item/440,2659268559,30008,5

http://www.tf2outpost.com/item/440,2643053984,250,5

http://www.tf2outpost.com/trade/20338228 B/O of ~2.5.

Using 2.3-2.5.

Let it ride.