https://backpack.tf/profiles/76561198040445926#!/compare/1526169600/1526342400

https://backpack.tf/profiles/76561198333349056#!/compare/1526083200/1526342400

Searing Humanball (34)

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Humanball mini:

https://backpack.tf/profiles/76561198077715705#!/compare/1526688000/1526774400

http://www.tf2outpost.com/trade/29654811 - 32 b/o

31 keys

https://backpack.tf/profiles/76561198071592342#!/compare/1527638400/1527724800

http://www.tf2outpost.com/trade/29659032 - 37 b/o

Strange g.fetti Bomber (37) + ~1 key = 38 keys

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https://backpack.tf/profiles/76561198114402400#!/compare/1533340800/1533427200

https://backpack.tf/profiles/76561198162755452#!/compare/1533340800/1533427200

Planets BoA (32)

BoA mini:

https://marketplace.tf/items/30066;5;u32 - 35 keys

http://imgur.com/gallery/rY8MHGn - unsold at 29

Last sugg:

https://backpack.tf/suggestion/5b6d9b3e44325a1ef91ea8bc