Buyers

http://www.tf2outpost.com/trade/10879813 - 1.66 each (Hi Vincent!), 4 days old

http://www.tf2outpost.com/trade/11009865 - 1.38 each, 1 day old, no success with HDMI from comments

Going to leave out any more buyers at 1.44 or less

http://www.tf2outpost.com/trade/11038417 - 1.33-2, no sellers on HDMI, not really valid but meh

No other buyers really, they're either looking for offers, swapping hats or buying at 1.33

Sellers

http://backpack.tf/classifieds/search/hdmi - One at 1.66, 3 at 2 ref, rest are higher

http://www.tf2outpost.com/trade/10948727 - 3 ref offer, 2 day old offer, unbought, 2 day old trade

http://www.tf2outpost.com/trade/10995824 - Unsuccesful at 3 ref each, 1 day old

http://www.tf2outpost.com/trade/10892418 - Unsuccesful at 4.66, 4 days old

http://www.tf2outpost.com/trade/10966048 - Rejected 2,33 offer, offer 1 day old, trade 2 days old

http://www.tf2outpost.com/trade/10984018 - 2 ref offer, no reply

http://www.tf2outpost.com/trade/10963082 - Unsold at 3 ref, 2 days old

http://www.tf2outpost.com/trade/11023267 - Unsold at 2 craft hats/2.66 - 18 hours old

http://www.tf2outpost.com/trade/10911178 - Offer of 2 ref, no reply

http://www.tf2outpost.com/trade/11048103 - 1.66, 36 minutes old (Want one? Get him!)

http://www.tf2outpost.com/trade/10902508 - Offer of 2 ref, no reply

http://www.tf2outpost.com/trade/10888444 - Festive Frontier (1 ref), Festive Buff (0.88-1) & Furious F. (1.33), total of 3.22-3.33, pretty good overpay. Offer 2 days old however w/o reply

http://www.tf2outpost.com/trade/10984018 - Offer of 2 ref, no reply

http://www.tf2outpost.com/trade/11014694 - 2 ref offer, 23 minutes ago

http://www.tf2outpost.com/trade/11047495 - 2 ref offer, counter of 2.66 (very recent)

http://www.tf2outpost.com/trade/10960287 - 2 ref offer, recent, no reply

http://www.tf2outpost.com/trade/11033416 - Unsold at 2.66/BP Expander, 14 hours

http://www.tf2outpost.com/trade/10966048 - Rejected at 2.33

Just for fun:

http://www.tf2outpost.com/trade/10964702 - Heavy Weapons Guy screaming at other guy for add... heh. Ok maybe not

http://www.tf2outpost.com/trade/11048168 - Calls it "the eye thingy"

I have a terrible sense of humour

Conclusion: There are way too many trades that are basically trying to sell for a key each, or more or equal to the unsuccessful sellers listed above. There are also way too many trades asking for offers. I'm finding this one a little tricky, so since I'm unsure if my suggestion is correct. Feedback appreciated, only my third suggestion. Ill resuggest if you guys would prefer a different price. Will also keep looking to add more proof.