I seem to hate myself with these suggestions.... (New Range due to more info! Thanks Fish :D )

Sale #1 - 150 keys

https://backpack.tf/profiles/76561198276310307#!/compare/1546214400/1546387200

https://backpack.tf/profiles/76561198061779536#!/compare/1546300800/1546387200

Sale #2 - 160 keys

https://backpack.tf/profiles/76561198074181346#!/compare/1546387200/1546473600

https://backpack.tf/profiles/76561198061779536#!/compare/1546387200/1546473600

Sale #3 - 1 for 1 with burning deep cover

https://backpack.tf/profiles/76561198150281353#!/compare/1543017600/1543104000

https://backpack.tf/profiles/76561198056793885#!/compare/1543017600/1543104000

Taking 176 keys

Sale #4 - Bulk

https://backpack.tf/profiles/76561198015547078#!/compare/1542844800/1543190400

https://backpack.tf/profiles/76561198056793885#!/compare/1543104000/1543190400

Sale #5 - Sold With 40 Keys For A C9 Beak (use there)

https://backpack.tf/profiles/76561198023895008#!/compare/1546992000/1547251200

https://backpack.tf/profiles/76561198071520036#!/compare/1547078400/1547164800

Sale #6 - 137 keys

https://backpack.tf/profiles/76561198061779536#!/compare/1547424000/1547510400

https://backpack.tf/profiles/76561198071520036#!/compare/1547164800/1547510400

Sale #7 - CHeart Pyro Mancer + Ausi Scatter (should be used there)

https://backpack.tf/profiles/76561198063905981#!/compare/1547596800/1547683200

https://backpack.tf/profiles/76561198061779536#!/compare/1547596800/1547683200

Sale #8 - Sold With 15 Keys + Miami Head Warmer For Brain Drain Peak (Use There)

https://backpack.tf/profiles/76561198331167728#!/compare/1547942400/1548028800

https://backpack.tf/profiles/76561198063905981#!/compare/1547942400/1548028800

Sale #9 - 136 keys

https://backpack.tf/profiles/76561198064982470#!/compare/1548028800/1548115200

https://backpack.tf/profiles/76561198331167728#!/compare/1548028800/1548115200

Sale #10 - Sold For D@D Warpig + Pro Ks Ausi Knife + Ambi (Using On Warpig)

https://backpack.tf/profiles/76561198064982470#!/compare/1548460800/1548547200

https://backpack.tf/profiles/76561198334946156#!/compare/1548460800/1548547200

Sale #11 - 1 for 1 with beams Ubersternmann (Use There)

https://backpack.tf/profiles/76561198368868701#!/compare/1545004800/1545436800

https://backpack.tf/profiles/76561198027603870#!/compare/1544918400/1545436800

Sale #12 - Bulk

https://backpack.tf/profiles/76561198165760088#!/compare/1545523200/1545609600

https://backpack.tf/profiles/76561198368868701#!/compare/1545523200/1545609600

Sale #13 - Bulk

https://backpack.tf/profiles/76561198368868701#!/compare/1547510400/1547856000

https://backpack.tf/profiles/76561198165760088#!/compare/1547769600/1547856000

Sale #14 - Sold With GE Brigade For CHeart Combustible + Buring Company Man (use on company)

https://backpack.tf/profiles/76561198145896898#!/compare/1545091200/1545177600

https://backpack.tf/profiles/76561198039731024#!/compare/1545091200/1545177600

Sale #15 - Untrace (i dont wanna count the 258 id's but ima guess a quicksale)

https://backpack.tf/profiles/76561198039731024#!/compare/1546646400/1546732800

https://backpack.tf/profiles/76561198061779536#!/compare/1546646400/1546732800

Sale #16 - 157

https://backpack.tf/profiles/76561198061779536#!/compare/1546732800/1546819200

https://backpack.tf/profiles/76561198070885461#!/compare/1546732800/1546819200

Sale #17 - 148 keys

https://backpack.tf/profiles/76561198070885461#!/compare/1547337600/1547424000

https://backpack.tf/profiles/76561198160856661#!/compare/1547337600/1547424000

Sale #18 - 1 for 1 with miami pullover (Using in pullover suggestion)

https://backpack.tf/profiles/76561198176297517#!/compare/1546128000/1546300800

https://backpack.tf/profiles/76561198137566942#!/compare/1546214400/1546300800

All Sales - 150, 160, 176, 137, 136, 157, 148

All Sales (Lowest To Highest) - 136, 137, 148, 150, 157, 160, 176

Excluding / Reason

136 / At Buyers

137 / At Buyers

Using Sales - 148, 150, 157, 160, 176

Excluding 176 now due to unsolds

https://imgur.com/a/dSABVsd

Taking 148 - 160