http://backpack.tf/classifieds/search/Sapper

One for 11.5 keys.

Most (if not all) unsold.

Unsold at current high end

http://www.tf2outpost.com/trade/9543643 - Unsold at 13.

http://www.tf2outpost.com/trade/9494937 - Unsold at 13.

http://www.tf2outpost.com/trade/9454794 - Unsold at 13.

http://www.tf2outpost.com/trade/9457736 - Unsold at 13.

http://www.tf2outpost.com/trade/9347380 - Unsold at 13.

http://www.tf2outpost.com/trade/9544483 - Unsold at 13.

http://www.tf2outpost.com/trade/9240394 - Unsold at 13.

http://www.tf2outpost.com/trade/9530811 - Unsold at 13.

http://www.tf2outpost.com/trade/9467879 - Unsold at 13.

Unsold within current range

http://www.tf2outpost.com/trade/9386999 - Unsold at 12 + 2 refined. (12.5 keys.)

http://www.tf2outpost.com/trade/9551038 - Unsold at 12.5.

Unsold at current low end

http://www.tf2outpost.com/trade/9538066 - Unsold at 12.

http://www.tf2outpost.com/trade/9508032 - Unsold at 12.

http://www.tf2outpost.com/trade/9533206 - Unsold at 12.

http://www.tf2outpost.com/trade/9539473 - Unsold at 12.

http://www.tf2outpost.com/search/90517708/2 - Unsold for S. Huntsman (10 - 11) + 2 keys.

http://www.tf2outpost.com/trade/9526567 - Unsold at 12. (One sold, one not.)

http://www.tf2outpost.com/trade/9548606 - Unsold at 12.

http://www.tf2outpost.com/trade/9502507 - Unsold at 12.

http://www.tf2outpost.com/trade/9526395 - Unsold at 12. (2 unsold.)

http://www.tf2outpost.com/trade/9545360 - Unsold at 12.

Unsold below current range

http://www.tf2outpost.com/trade/9547838 - Unsold at 11.5 keys.

Offers

http://www.tf2outpost.com/trade/9411847 - Offer of 13 keys. (Retracted.)

http://www.tf2outpost.com/trade/9359543 - Offer of 12 keys.

http://www.tf2outpost.com/trade/9268638 - Offer of 12 keys.

http://www.tf2outpost.com/trade/6994933 - Offer of 12 keys.

Buying Trades

http://www.tf2outpost.com/trade/9466955 - One add for 10 keys, another offer for 12.

http://www.tf2outpost.com/trade/9086429 - Offers of 12 and adds for 11.

Reasons for lowering:

There are a whole ton on OP and classifieds unsold at 13 keys; I've only seen one offer so far, and that offer of 13 keys was retracted. All other 12 key offers were taken or retracted. There are none really selling for 13 keys; that's why there needs to be no range. None really below 12 keys, either. Only 1 or 2. Tell me what you think.