Proof:

Sellers:

http://www.tf2outpost.com/trade/11478902 - Has an offer that is accepted of 1.5

http://www.tf2outpost.com/trade/11351072 - Has an offer of 1.5

http://www.tf2outpost.com/trade/11439320 - Had an offer of 1.5, he bought from someone else, probably for that much

http://www.tf2outpost.com/trade/11037145 - Someone wrote added (for 2) and someone offered strange ambassador (1) with critical kills (1.5 - 1.8) when part is attached it loses some of it's worth but it can't go down from 1.5 - 1.8 to less than 0.5 so that's still 1.5 or more

There are 1 page and 2 trades of this, some sell for items, some are new, some are unsold and some are overpriced but I couldn't find not even a single 1.2 or less than ~1.5 sellers

Classifieds has 2, 1 for 1.5 and 1 for 2

Buyers:

http://www.tf2outpost.com/trade/10817699 - Buying for 6 ref (really close to 1.2 keys) no recent adds

http://www.tf2outpost.com/trade/11492740 - Buying for 1 key and 1 ref (1.2 keys), the trade is young but lets watch and see what happens

Opened 2.5 out of 4 pages of links, only 2 that were buying for above 1 key, most are trying to buy for 3 - 4 ref and obviously fail and even if 1 sells them it's an obvious quicksell anyways