I think the price is a little old and needs updating, over 5 months and no update.

So this is my first proper price suggestion, my previous one was bullshit and I had no idea what I was doing (forgive me).

So, firstly, we can look to outpost at the "buyouts". http://www.tf2outpost.com/trade/23224918 buyout of 3.5 but no real offers close to that in pure. I was looking to buy, as you can tell from the comments. We see a bubbling larrikin (~13 keys) + a searing nappers (not even selling for ~2 on outpost) offered, so it comes to around about 3 in unusuals. This is the highest offer from the trade.

There is also an offer of a Flaming Lantern Ten Gallon, however the price on this site is old for that too, but the buyouts from the two on Outpost are 4, yet unsold. http://www.tf2outpost.com/trade/23028530 This one unsold after a month.

Another offer is a Cauldron Bubbles Steel Shako, an unpriced robo hat with a bad effect. 1/1 in the world, but I wouldn't see it going for more than 2.5-3.

My second set of evidence for the pricing of this hat is my experience from owning it. I found this guy on a trader server http://www.tf2outpost.com/trade/23071171 unknowing that it was duped, forgot to check and only found out after I sold it. However, he instantly took 3 pure, and I thought I had found a good deal. http://prntscr.com/54kmz8 <---- showing the trade

However, upon attempting to sell my soul on various trading servers and offering on many outpost trades, I found that the majority of offers I received came within the 2.3-2.8 bracket. However, this could be due to a combination of factors such as quickbuyers, the duped quality of the hat (although I believe it doesn't matter on low tiers) or simply the unwantedness of the hat. Anyway, after a few days of attempting to sell it for 3.5 pure and receiving unusual offers of less than 3 on a variety of trading networks, I dropped my price to 3 pure as a "quicksell". After 2 days I had received zero offers.

Finally, I received an offer of 42 keys + about 2 keys in items. I decided to take it as I believed it was the best I was going to get. http://prntscr.com/54kp5e

And that's all I have. Sold it for about 2.9 after buying it for 3 flat. Made a bit of a mistake but oh well. I hope you can learn from my mistakes. I don't know if this is classed as a good suggestion but I tried.