Unusual suggestions don't work the same way as non-unusuals. Gladiator.tf B/Os are not enough to support your suggestion, you have to check the compare links (not just add them to the suggestion)

The actual sale was:

PE Nunhood + Strange Byte'd Beak + Strange Heat of Winter

for

Duped BF Armored Authority + Spellbound Aspect Taunt: Panzer Pants + Strange Marksman's Mohair + Strange Festive Buff Banner + Strange Veteran's Attire + Strange Cold Snap Coat

Minis are required for most items. More info here:

https://forums.backpack.tf/topic/6033-rules-for-unusual-price-suggestions/

You have made a few unusual suggestions this way, so you should check them all.