First suggestion ever so go easy on me. :)

Suggesting a range, as I've had numerous successful sales at 2.33. First attempted this 1 rec price increase tentatively, but as it turned out people are more than happy to pay that price for this item. Don't even have to wait that long. Proof of sales at that price:

http://puu.sh/3ssXC.png

http://puu.sh/3ssZ2.png

http://puu.sh/3st1T.png (2.33 each)

http://puu.sh/3svZA.png

http://www.tf2outpost.com/trade/12227468

http://www.tf2outpost.com/trade/11727724

http://www.tf2outpost.com/trade/12247750

(The reason why there are four sales and three OP trades to show for it is because I tend to not put up the same items at once if I have multiples of them and simply keep a "shop window" item up on the trade until I run out of stock).

I know this is not a ton of proof, but unfortunately most other people tend to (unsuccessfully) try and sell theirs for ludicrously high prices so it's hard to find any legit trades (this mini is among the rarest low-tier bk's on the market, by the way).

Still, three of those sales were made in the very same day. I think that says something about the demand for it and the need to reflect that in the price it has on bp.tf.