With that many sellers under 1.33 I don't think 1.33 flat is a good price, needs a range.

Extra Stuff to help you out, I was going to make a suggestion but you beat me to it

Some may already be in your proof, but im too lazy to look for which ones

Selling 1.33 or lower

http://www.tf2outpost.com/trade/15690887 wants 4 ref for all of his haunteds = 1 ref each

http://www.tf2outpost.com/trade/15945295 1 ref, has an add supposably

http://www.tf2outpost.com/trade/15875372 1 ref

http://www.tf2outpost.com/trade/15843606 1.33

http://backpack.tf/classifieds/search/id/5270fb574dd7b816398b4567 5 for 1.33 or less

Unsolds at 1.66+

http://www.tf2outpost.com/trade/15873083 2 days

http://www.tf2outpost.com/trade/15437261 2 weeks, 2 ref

http://www.tf2outpost.com/trade/15738583 1 week

http://www.tf2outpost.com/trade/15685335 1 week, 2 ref

http://www.tf2outpost.com/trade/15831614 5 days, 2 ref

http://www.tf2outpost.com/trade/15830435 5 days

http://www.tf2outpost.com/trade/15818248 5 days, 2 ref

http://www.tf2outpost.com/trade/15927085 17 hours, youngish

http://www.tf2outpost.com/trade/15707501 1 week

http://backpack.tf/classifieds/search/id/5270fb574dd7b816398b4567 many 2 days old at 1.66+

Sold 1.33 or lower

http://www.tf2outpost.com/trade/15911552 1 ref, not in bp

http://www.tf2outpost.com/trade/15904165 1 ref, not in bp

http://www.tf2outpost.com/trade/15934929 0.44, quicksell i would guess