With just a quick search I've seen several people buying this for 4 keys, and many people asking for 5. When you link for evidence, try to point to a specific trade. I don't see any evidence for a drop in price.

In less than a minute I found 3 trades with people offering or where people have bought this for 4 keys.

http://www.tf2outpost.com/trade/4221846

http://www.tf2outpost.com/trade/4197015

http://www.tf2outpost.com/trade/3926433

Bought one for 3 keys and a ref a few days ago and it was not easy at all. Many trades had 4 key offers. Current price is fine.

i had one trade up for 4 keys and took me less than 45 minutes to sell. this is fine

[url]http://www.tf2outpost.com/trade/4368865[/url] (dafuq?)

[url]http://www.tf2outpost.com/trade/4364570[/url]

[url]http://www.tf2outpost.com/trade/4368638[/url]

I'm too lazy to find more.

I've seen people lookin for hours tryin to buy these at 7-8ref... a price closer to 4 keys/10ref is apropriate imo.

It wont be coming anytime soon. No botkiller or festive version. One of the rarest stock strange. Expect 6 keys soon.