Find 12 keys and we'll talk, 13 is selling FAST, even 14 is selling fast and none at Classifieds below 13, so again, find me anything below 13 that isn't a quicksell

So you're having bad luck or something, I don't know

But what I do know is that I see many more sales at 13 than at 12, and the ones I see at 12 are all quicksells

Extra Proof:

http://www.tf2outpost.com/trade/15587384 - Sold for 13 without a bump

First link is a quicksell even below 12

Second link seems valid

Third link is poorly bumped

Fourth link is unbumped

You have 1 invalid link, 1 I question it's validity, 1 valid and 1 quicksell

Not much of a counter-proof just like the other guy provided, 2 links that sold very quickly, also your 1 valid link is 12.5, not 12

Some do sell for 13 fast and some take time like you, but since I have much more links at 13 than your links of below 13 I think 13 is the most common price right now

Extra Proof:

http://www.tf2outpost.com/trade/13005724 - Has an offer of 1 buds (16 keys) for Grenade + 3 keys, making Grenade 13 keys pure

http://www.tf2outpost.com/trade/15471970 - Has an offer of Smoking Conquistador (1 buds original value as well if I'm not mistaken but there's 1 at Classifieds at 15 keys, so we'll do * 0.9 from that), ~13.5

http://www.tf2outpost.com/trade/15556359 - Has an offer of 7 keys + Strange Grenade (4 keys) + TS Veil (Veil is 1 key, TS is 1.2, lets call TS Veil ~1.33 keys) + High-Five Taunt, making the offer ~13.5, ~13 with item overpay

I know the offer was towards the Grenade because he recently bought a grenade from someone else (the Grenade he bought was a quicksell with parts so even if it was a low offer for it, it was a quicksell) and the one who had this offer also declined it

http://www.tf2outpost.com/trade/15556359 - Has an offer of #20 Blood Banker (offerer claims backpack.tf prices it as 9 keys) + Strange Grenade (4) + Gold Doublecross (3+) + Pink Cockswain (0.6+), the sweets to Blood Banker are ~8 or at least 7.5 so even if the Blood Banker is 6 keys the offer is 13 or 13+

Also has an offer of Lime Strange Robro (10 - 12 unpainted, Lime is 5.66 - 6 ref) + 15 ref (~2.5 keys) making the offer ~12.5 - 14.5 (as prices are pretty simple to get 13 or more)

http://www.tf2outpost.com/trade/15486794 - Sold for 12 keys + 4 ref (0.66 keys) + Haunted Transylvania Top (unknown) + One-Man Army (1.33 - 1.66, ~ 0.25 keys), Total Sale is ~13, perhaps a bit (only a bit though) more, since most was pure I don't really think any overpay is needed, sold within a day btw

http://www.tf2outpost.com/trade/15609110 - Sold for 13 in 2 hours

http://bazaar.tf/trade/528826 - Sold for 14? (it's not in his backpack but I'm not quite familiar with how bazaar works, anyways if it is it sold pretty quickly for 14)

http://www.tf2outpost.com/trade/15612574 - Sold for 14 in 11 hours

Last time I checked Backpack.tf is supposed to represent the most common price traded

There are always people who sell for below and sell for above, and also manage to do it

So far I've seen that most trades below 13 are sold within hours, maybe a day (most not all)

And even with yours and other counter-proof links you have much less sellers at 12 than my successful at 13 or more, until there's massive counter-proof of 12 that haven't sold in few hours or really tons of sellers I think 13 flat is better

Also your links are few hours old, I'm pretty sure at least 1 will sell in the next few hours/day

And so far your second link is unbumped