The first two are duped cubes, making them invalid in this price suggestion, but the last one is legitimate. Here's another clean trade http://www.tf2outpost.com/trade/10757197 and they have offers of around 8 in unusuals along with this one: http://www.tf2outpost.com/trade/9803567 and this one: http://www.tf2outpost.com/trade/8466726. It's a legitimate suggestion that has my vote, but just make sure you check for cleanliness before you post next time.

There are, you just have to sort through the dirty ones to find them.