http://backpack.tf/profiles/76561198139076566#!/compare/1492819200/1492905600

http://www.tf2outpost.com/user/76561198139076566 - no B/O

Sold for 21 keys

http://backpack.tf/profiles/76561198136239758#!/compare/1491523200/1491609600

http://www.tf2outpost.com/user/76561198136239758 - no B/O

Sold for a Cloud 9 Flipped Trilby + 2 keys, sold to a person named 'Dixie' so perhaps that explains the high amount paid for this :P

http://backpack.tf/profiles/76561198082940868#!/compare/1491264000/1491436800

http://www.tf2outpost.com/trade/28860224 - B/O 20 keys

Sold for 19 keys

http://backpack.tf/profiles/76561198100722286#!/compare/1490572800/1490659200

???

http://backpack.tf/profiles/76561198212049401#!/compare/1492992000/1493164800

http://backpack.tf/item/1654562038 - Aussie KS Minigun (17) + 2 ??

http://backpack.tf/profiles/76561198145823187#!/compare/1490572800/1491609600

???

As for the Runner's Warm-Up, that will probably end up too low.

http://backpack.tf/stats/Unusual/Runner's%20Warm-Up/Tradable/Craftable/60

21 keys should definitely be in the range here.