Ooooh... Purple! (Resuggest because of new info and a different price range.)

https://backpack.tf/item/7660654216

Sale 1: 23 keys

https://backpack.tf/profiles/76561198341171690#!/compare/1560297600/1560384000

https://backpack.tf/profiles/76561198151901778#!/compare/1560384000/1560470400

https://backpack.tf/item/7660654216

Sale 2: 14 keys

https://backpack.tf/profiles/76561198081220016#!/compare/1566000000/1566086400

https://backpack.tf/profiles/76561198335791307#!/compare/1565913600/1566000000

https://backpack.tf/item/7544610771

Sale 3: Sold for a Purple Energy German Gonzila (33-38 Keys; 35.5 Keys in the middle)

https://backpack.tf/profiles/76561198311147586#!/compare/1565481600/1565568000

https://backpack.tf/profiles/76561198106552688#!/compare/1565568000/1565913600

(Buyout was 26 keys: https://gyazo.com/cc16ac68d8e3cd67f817500077b56735)

Mini-Price Suggestion for Purple Energy German Gonzila :

https://marketplace.tf/items/tf2/323;5;u10

Sale 1: Sold for $70

Key Price: $1.82

70 / 1.82 = 38.46. Rounded is 38 keys.

https://marketplace.tf/items/tf2/323;5;u10

Sale 2: Sold for $60

Key Price: $1.82

60 / 1.82 = 32.96. Rounded is 33 keys.

https://marketplace.tf/items/tf2/323;5;u10

Sale 3: Sold for $64

Key Price: $1.82

64 / 1.82 = 35.16. Rounded to 35 keys.

https://backpack.tf/item/376102502

Sale: ?

https://backpack.tf/profiles/76561198823042101#!/compare/1562630400/1565222400

https://backpack.tf/profiles/76561198133882561#!/compare/1562630400/1565222400

https://backpack.tf/item/2414531213

Sale: ?

https://backpack.tf/profiles/76561198311147586#!/compare/1565740800/1565827200

https://backpack.tf/profiles/76561198305676157#!/compare/1565654400/1565827200

End of Mini-Price Suggestion

Back to our regularly scheduled program...

https://backpack.tf/item/7411445380

Sale 4: Bulk Sale

https://backpack.tf/profiles/76561198073167542#!/compare/1561248000/1565395200

https://backpack.tf/profiles/76561198049999947#!/compare/1560988800/1566000000

https://backpack.tf/item/7862596296

Sale 5: Sold for a Disco Beat Down Berlin Brain Bowl (Recent sale is unknown, so we'll use 38-40 keys : middle is 39 as it is not too old.) - Miami Nights Elf Esteem (9 keys) = 30 keys

https://backpack.tf/profiles/76561198065921725#!/compare/1568419200/1568851200

https://backpack.tf/profiles/76561198000811394#!/compare/1568764800/1568851200

Mini-Price Suggestion for Miami Nights Elf Esteem

https://backpack.tf/item/5375841450

Sale 1: Sold for 9 keys + 22 ref. Rounded to 9 keys.

https://backpack.tf/profiles/76561198841279602#!/compare/1563235200/1563321600

https://backpack.tf/profiles/76561198852823105#!/compare/1558051200/1563321600

https://backpack.tf/item/5562296763

Sale 2: Sold for a Silver Cyclone Taunt: The Dueling Banjo (7-8 keys : Middle is 7.5), Pocket Pardner (2.55-2.66 ref : Middle is 2.60), Bread Heads (1.35 keys), The Crack Pot (2.66-2.77 ref: Middle is 2.70), The Catcher's Companion (2.88-3 ref: Middle is 2.90), and a Wise Whiskers (3.22 ref) In total, this equals 8.85 keys + 11.42 ref. Rounded to 9 keys.

https://backpack.tf/profiles/76561198313943281#!/compare/1566691200/1566777600

https://backpack.tf/profiles/76561198065921725#!/compare/1566691200/1566777600

https://backpack.tf/item/5562296763

Sale 3: Sold for 6 keys

https://backpack.tf/profiles/76561198251978870#!/compare/1568764800/1568937600

https://backpack.tf/profiles/76561198841279602#!/compare/1568764800/1568851200

https://backpack.tf/item/5562296763

Sale: ?

https://backpack.tf/profiles/76561198000811394#!/compare/1568851200/1569024000

https://backpack.tf/profiles/76561198251978870#!/compare/1568764800/156893760

https://backpack.tf/item/7881010965

Sale: ?

https://backpack.tf/profiles/76561198801172702#!/compare/1565481600/1565740800

https://backpack.tf/profiles/76561198801572577#!/compare/1565395200/1565568000

End of Mini-Price Suggestion

Back to our regularly scheduled program...

https://backpack.tf/item/8071031111

Sale: ?

https://backpack.tf/profiles/76561198004386287#!/compare/1568764800/1568851200

https://backpack.tf/profiles/76561198026129220#!/compare/1568851200/1568937600

https://backpack.tf/item/7660654216

Sale: ?

https://backpack.tf/profiles/76561198335791307#!/compare/1565913600/1566000000

https://backpack.tf/profiles/76561198081220016#!/compare/1566000000/1566086400

https://backpack.tf/item/7862596296

Sale: ?

https://backpack.tf/profiles/76561198000811394#!/compare/1568851200/1569024000

https://backpack.tf/profiles/76561198341171690#!/compare/1568851200/1568937600

https://backpack.tf/item/7681531170

Sale: ?

https://backpack.tf/profiles/76561198059319460#!/compare/1560470400/1566000000

https://backpack.tf/profiles/76561198323017478#!/compare/1557446400/1562025600

https://backpack.tf/item/7681531170

Sale: ?

https://backpack.tf/profiles/76561198323017478#!/compare/1562025600/1562544000

https://backpack.tf/profiles/76561198014177920#!/compare/1555804800/1564617600

https://backpack.tf/item/7953492324

Sale: ?

https://backpack.tf/profiles/76561198192947173#!/compare/1564185600/1564704000

https://backpack.tf/profiles/76561198105325671#!/compare/1559865600/1564876800

https://backpack.tf/item/7660654216

Sale: ?

https://backpack.tf/profiles/76561198286234945#!/compare/1559865600/1559952000

https://backpack.tf/profiles/76561198341171690#!/compare/1559865600/1559952000

https://backpack.tf/item/7660654216

Sale: ?

https://backpack.tf/profiles/76561198151901778#!/compare/1560470400/1560556800

https://backpack.tf/profiles/76561198335791307#!/compare/1560470400/1560556800

In conclusion, the sale numbers are 14, 23, 26, and 30. 14 is cut as it is under buyers. The rest can stay.

FINAL PRICE RANGE: 23-30 KEYS