Conservative drop. The price is pretty outdated as far as the price on salvaged crates drops dramatically.

To begin with,

2 keys 1 ref = 2,15

2 keys 2 ref = 2,3

2 keys 3 ref = 2,4

2 keys 4 ref = 2,6

Considering 1 key = 7.15

Atm of creating suggestion offers on classifieds:

1x @ 2 keys

3x @ 2.15 keys

7x @ 2.3 keys

14x @ 2.4 keys

Unsolds @ 2.6 keys:

http://www.tf2outpost.com/trade/18813095 - 1 day

http://www.tf2outpost.com/trade/18797879 - 2 days (autobump)

http://www.tf2outpost.com/trade/18724131 - 5 days (autobump)

http://www.tf2outpost.com/trade/18700456 - 6 days

http://www.tf2outpost.com/trade/18707308 - 6 days

http://www.tf2outpost.com/trade/18687694 - 1 week

http://www.tf2outpost.com/trade/18563495 - 1 week (autobump)

http://www.tf2outpost.com/trade/18676235 - 1 week (autobump)

http://www.tf2outpost.com/trade/18629430 - 1 week (poorly bumped)

Unsolds @ 2.5 keys: (included here "bp.tf prices" offers as well cos it's an average of the current range)

http://www.tf2outpost.com/trade/18815921 - 1 day

http://www.tf2outpost.com/trade/18786050 - 2 days

http://www.tf2outpost.com/trade/18792901 - 2 days

http://www.tf2outpost.com/trade/18795672 - 2 days

http://www.tf2outpost.com/trade/18793587 - 2 days

http://www.tf2outpost.com/trade/18795726 - 2 days

http://www.tf2outpost.com/trade/18779500 - 3 days

http://www.tf2outpost.com/trade/18781458 - 3 days (poorly bumped)

http://www.tf2outpost.com/trade/18781576 - 3 days

http://www.tf2outpost.com/trade/18753293 - 4 days

http://www.tf2outpost.com/trade/18751485 - 4 days

http://www.tf2outpost.com/trade/18763002 - 4 days

http://www.tf2outpost.com/trade/18712573 - 6 days

http://www.tf2outpost.com/trade/18715268 - 6 days

http://www.tf2outpost.com/trade/18383995 - 3 weeks

http://www.tf2outpost.com/trade/18297500 - 3 weeks (autobump) [has an add 2 weeks ago, still in bp though]

Unsolds @ 2.4 keys:

http://www.tf2outpost.com/trade/18827424 - young

http://www.tf2outpost.com/trade/18807560 - 1 day (autobump)

http://www.tf2outpost.com/trade/18769129 - 3 days

http://www.tf2outpost.com/trade/18772155 - 3 days

http://www.tf2outpost.com/trade/18774745 - 3 days

http://www.tf2outpost.com/trade/18730305 - 5 days

http://www.tf2outpost.com/trade/18720904 - 5 days - 2 out of 4 unsold (autobump)

http://www.tf2outpost.com/trade/18599539 - 1 week

http://www.tf2outpost.com/trade/18689371 - 1 week, gave up selling at 2.4 and dropped to 2 keys

Unsolds @ 2.3 keys:

http://www.tf2outpost.com/trade/18831602 - young, sells 2

http://www.tf2outpost.com/trade/18826096 - young, autobump, but still unsold

http://www.tf2outpost.com/trade/18827424 - young

http://www.tf2outpost.com/trade/18821932 - young

http://www.tf2outpost.com/trade/18805709 - 1 day

http://www.tf2outpost.com/trade/18786342 - 2 days

http://www.tf2outpost.com/trade/18791280 - 2 days

http://www.tf2outpost.com/trade/18783637 - 2 days (autobump)

http://www.tf2outpost.com/trade/18767143 - 3 days

http://www.tf2outpost.com/trade/18758695 - 4 days (autobump)

http://www.tf2outpost.com/trade/18724125 - 5 days

Unsolds @ 2.15 keys:

http://www.tf2outpost.com/trade/18822025 - young

http://www.tf2outpost.com/trade/18805627 - 1 day (unbumped)

http://www.tf2outpost.com/trade/18810397 - 1 day

http://www.tf2outpost.com/trade/18824662 - young (12 hours), but with autobump

Unsolds @ 2 keys:

http://www.tf2outpost.com/trade/18831511 - young (autobump)

http://www.tf2outpost.com/trade/18824926 - young, not bumped

http://www.tf2outpost.com/trade/18805937 - selling 2

http://www.tf2outpost.com/trade/18609865 - 1 week

Perhaps too early to include 2.15 keys in the range.

Trade.tf gives average trading price @ 2.3 keys (2 keys 2.33 ref) which is the low end of the suggested range.