Item: https://backpack.tf/item/5380611642

Seller's compare: https://backpack.tf/profiles/76561198440460554#!/compare/1727481600/1727654400

If this was only one sale, you should suggest this at 425 flat, ranges are only used when there are multiple sales involved! It's also a good idea to provide the links above

Another recent movement involving this hat:

https://backpack.tf/profiles/76561198129552058#!/compare/1724025600/1724112000

https://backpack.tf/profiles/76561198440460554#!/compare/1723593600/1724112000

Seems to have sold, along with 280 pure (or 710??? probably not tho), for a Cloudy Moon Grimm Hatte, but it would probably be better to use this to price the Grimm Hatte instead since it appears to lack other usable sales

I also recommend reading this guide for more information on how to make Unusual suggestions

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