having spent the better part of a month selling a lot of vintages including this one, 4 days at unsold does NOT mean it isn't worth that price. it took me two weeks to sell my vintage fragment for 2 keys but I didn't budge and I managed to get it.

b/c ppl seem to be selling a bit lower than 1.5 I'd say the range could be updated, but you have no proof supporting the range you are trying to make. all of these trades are very young for a collector's vintage.

Here take some proof i found :

http://puu.sh/2GRLg.png < 1 seller for 1.25 keys, 2 unsold for 1.5

Unsold for below 1.5 keys :

http://www.tf2outpost.com/trade/10245295 < Unsold for 1 key+0.44ref, 4 days old

http://www.tf2outpost.com/trade/10230861 < Unsold for 1key+1.66ref, 4 days old

http://www.tf2outpost.com/trade/10257755 < Unsold for 1key+2ref, 3 days old

http://www.tf2outpost.com/trade/10289555 < Unsold for 1 key+2.33ref, 2 days old

http://www.tf2outpost.com/trade/10220691 < Unsold for 1key+3ref, 4 days old, last bump a day ago

http://www.tf2outpost.com/trade/10304675 < Unsold for 1 key+3ref, no bump

Unsold for 1.5 keys :

http://www.tf2outpost.com/trade/10236192 < 4 days old

http://www.tf2outpost.com/trade/10266454 < 3 days old

http://www.tf2outpost.com/trade/10331828 < 1 hour old (still new)

Offers :

http://www.tf2outpost.com/trade/9683364 < 1key+ticket and 6.55ref(1.37keys) offer

http://www.tf2outpost.com/trade/8546167 < 6 ref (1.26keys)

Quick Buyers :

http://www.tf2outpost.com/trade/10153997 < Buying for 4.33ref, owns : 0

GOOD LUCK! UPVOTE :)