Easy to buy at 3 and 3.33.

http://backpack.tf/classifieds/search/Strange%20Enforcer Some at 3/3.33, lots at 3.66-4 with no sales

Selling at 3 or less:

http://www.tf2outpost.com/trade/12005722

http://www.tf2outpost.com/trade/12005676

http://www.tf2outpost.com/trade/12004828 - 2.77

http://www.tf2outpost.com/trade/12004562

http://www.tf2outpost.com/trade/12002007 - 4 @ 2.44 wow

http://www.tf2outpost.com/trade/12001335 - 2.66

http://www.tf2outpost.com/trade/12001302 - 3 @ 3 ref

http://www.tf2outpost.com/trade/12001293 - 8 @ 2 ref, goodness

http://www.tf2outpost.com/trade/12001273

http://www.tf2outpost.com/trade/12000787 - 8 @ 3 ref

http://tf2tp.com/trade.php?trade=9564918

http://www.tf2outpost.com/trade/12000722

http://www.tf2outpost.com/trade/11999584 - 5 @ 3 ref

http://www.tf2outpost.com/trade/11999158

http://www.tf2outpost.com/trade/11995498

Selling or Sold at 3.33:

http://www.tf2outpost.com/trade/12003058

http://www.tf2outpost.com/trade/12002594

http://www.tf2outpost.com/trade/12000785

http://www.tf2outpost.com/trade/11999315

http://www.tf2outpost.com/trade/11998754

http://www.tf2outpost.com/trade/11996287

http://www.tf2outpost.com/trade/11995874 - 5, sold 1

http://tf2tp.com/trade.php?trade=9564300

http://www.tf2outpost.com/trade/11994227

http://www.tf2outpost.com/trade/11993944 - 3 @ 3.22

Unsold at 3.66-4+:

http://www.tf2outpost.com/trade/11995802

http://www.tf2outpost.com/trade/11995313 (Item deleted but still in bp)

http://tf2tp.com/trade.php?trade=9564294

http://www.tf2outpost.com/trade/11994249

http://www.tf2outpost.com/trade/11993646

http://www.tf2outpost.com/trade/11993597

http://www.tf2outpost.com/trade/11993074

http://www.tf2outpost.com/trade/11990908

http://www.tf2outpost.com/trade/11990316

http://www.tf2outpost.com/trade/11989688

TL;DR lots of sellers at 3-3.33, even possible to buy a little lower. Will need to drop even more within the next couple of days.

All proof comes from the past 10-12 hours. If I need more, I can get more without issue.