Updating the old price,

http://www.tf2outpost.com/trade/7263470 , rejected 5 pure couple of times , offered : sunbeams cowl 5.5

http://www.tf2outpost.com/trade/7457914 reject 5 pure

http://www.tf2outpost.com/trade/8341141 again reject 5 pure , willing to sell for 5 pure and 15 keys : 5.6

offered 4 pure + bubble pot + sweets about 5.3 : rejected

http://www.tf2outpost.com/trade/8581961 new trade b/o 7 pure

taking 5 pure as low end since this offer rejected many times

taking range between the seller who willing to sell for 5.6 and the offers 5.5-5.3 ..

5.4 to be the high end for current time .