Another sale:

https://backpack.tf/profiles/76561198103047421#!/compare/1512518400/1512604800

https://backpack.tf/profiles/76561198105324926#!/compare/1512518400/1512604800

Sold for a Spectral Swirl Taunt: Kazotsky Kick, better used for it instead

Strange Planets Peak is unpriced. The non-strange variant is the priced one, and that price is outdated anyway.

Strange Peak mini: https://backpack.tf/profiles/76561197964171516#!/compare/1507680000/1507766400 - Planets Hive (mini at 13), Aces Metal Modest (mini at 19), Logo Mullet (mini at 12), and ~2 keys of sweets

http://webcache.googleusercontent.com/search?q=cache:http://www.tf2outpost.com/trade/29373379 - B/O was 44, caps there, which makes that sale ~45.5 for the Whoopee

Mullet mini: https://backpack.tf/profiles/76561198059220458#!/compare/1511827200/1511913600 - 1:1 w/ Peace Hetman (mini at 12), taking 12

Hetman mini: https://backpack.tf/profiles/76561198059220458#!/compare/1511740800/1511827200 - 9 pure + ~4k sweets, 13

http://www.tf2outpost.com/trade/29449048 - B/O was 12, caps there, taking 12

Metal Modest mini: https://backpack.tf/profiles/76561198017534558#!/compare/1506729600/1506816000 - Bubbling Modest (mini at 21) + ~1k sweets, 22 total

http://www.tf2outpost.com/trade/29383449 - B/O was 19, caps there

Bubbling Modest mini: https://backpack.tf/profiles/76561198101970268#!/compare/1508716800/1508803200 - Blizz Cone, 2 pure, and PKS Sniper Fab (~9 keys at the time of the sale per SCM), ~23 total

+

https://imgur.com/a/VnmmE - Sellers for 19, taking 19-23, or 21.

Hive mini: No recent sales, seller for 13: https://imgur.com/a/cghmS - taking 13

Other Whoopee sales:

https://backpack.tf/profiles/76561198122802981#!/compare/1508457600/1508630400 - 40 pure? Histories don't match though, so unclear

https://backpack.tf/profiles/76561198018528305#!/compare/1507852800/1507939200 - 36 pure

https://backpack.tf/profiles/76561197963500354#!/compare/1510790400/1510876800 - PKS Aussie Scatter + Max, ~49

https://backpack.tf/profiles/76561198189960814#!/compare/1511568000/1511654400 - 39 pure

So sales are 35 (pure), 36 (pure), 39 (pure), 40? (pure, unclear), ~45.5 (Peak), and ~49 (Max/Scatter). I think leaving the Max/Scatter sale out makes sense given the current clean seller for 45, and the unknown B/O on that sale which was likely lower than 49 anyway. Not going to split hairs over the Peak sale, this should be close enough.