You need sales and/or buyers to increase a price.

Buyers for 1 ref

http://imgur.com/5FnFxFC

You need sales and/or buyers to raise a price, not sellers.

http://www.tf2outpost.com/trade/27562275 - quicksale at 0,88 ref

I couldn't find a single outpost seller at 0,66 ref.

Edit: None at 0,66 ref on classifieds as well. SCM supports. Upvote.

http://www.tf2outpost.com/trade/27532628 buyer at 1ref

@suggester

for future reference, you need to screenshot the classifieds to use them

For now, I'll go ahead and upvote because other people had to give proper proof for you

But next time, give us better and valid evidence