I guess its pretty clear this needs a change.

Lots of well-bumped sell orders at 18.77:

http://prntscr.com/dtgbfw

http://backpack.tf/item/5296275094

http://backpack.tf/item/4602315476

http://backpack.tf/item/5374183000

http://backpack.tf/item/5389695208

http://backpack.tf/item/3934590035

http://backpack.tf/item/4585130327

http://backpack.tf/item/4906080932

Buyers dont counter 18.77

Some additional evidence:

The classifieds (now you can see how long ago they were listed): http://prntscr.com/dtgiu1

If you look at the histories, you can see all of them are at least 1 day in the owner's backpack. This doesnt mean that theyre unsold for that amount of time, but considering the sellers are all bots or traders, this is likely the case.