1.8 key = 1 key and 10.66 ref

Selling/Sold:

http://www.tf2outpost.com/trade/24129223 1 key and 7 ref paindted too (~1.53 key)

http://prntscr.com/5gm2i5 1.4 key

http://prntscr.com/5gm2z3 1 key and 5.66 ref (~1.42 key)

http://www.tf2outpost.com/trade/24106784 less than 1.8 key

http://www.tf2outpost.com/trade/24112502 free lime paint

http://www.tf2outpost.com/trade/24125542 1 key and 7 ref (~1.53 key)

http://www.tf2outpost.com/trade/24121100 1.7 key

http://www.tf2outpost.com/trade/24117847 1.2 key in item

http://www.tf2outpost.com/trade/24120601 1.62 key

http://prntscr.com/5gm4a7 1 key and 6.66 ref

http://prntscr.com/5gm4ew 1 eky and 10 ref (~1.75 key)

http://www.tf2outpost.com/trade/24104162 1 key and 10 ref (~1.75 key)

http://prntscr.com/5gm4qg 1 key and 10 ref (~1.6 key)

http://prntscr.com/5gm4yi 1.53 key

http://prntscr.com/5gm419 1 key and 7.66 ref (~1.6 key)

http://prntscr.com/5gm515 1.6 key

http://prntscr.com/5gm39d 1.6 key

http://prntscr.com/5gm57q 1.6 key

http://prntscr.com/5gm54o 1.6 key painted too

http://prntscr.com/5gm59n 1.68 key

Classsified there are plenty under 1.8 key