I had this recently, probably never wanting it again.

http://www.tf2outpost.com/trade/25706959 ~ Unsold at 31 keys for 3 days.

http://imgur.com/RYY3dbj ~ My own sale, I offered on a Blizzard Belt + 3 keys, making it 36 keys

http://imgur.com/fiGtSEn ~ Another of my own sale, I bought it for a Stormy Grenadier + Planets CM + very minor sweets. (If you don't believe these sales, feel free to check inventory histories.) ~ 31 keys after overpay.

Mini for Grenadier

http://www.tf2outpost.com/trade/25239132 ~ Sold for 15 keys pure

Mini for CM

http://www.tf2outpost.com/trade/25693800 ~ Seller at 19 keys pure

Feel free to counter or support my proofs.