Another mirror sale. Least it's not a Crone suggestion.

https://backpack.tf/profiles/76561198001044586#!/compare/NaN/1659916800 - Sold for 40 keys pure.

https://backpack.tf/profiles/76561198057897812#!/compare/1656201600/1656288000 - Sold with 175 keys for a Burning Flame Blast Defense, probably outlier since that would make the range 40-70+?

Plus it seems Burning Flames might have been less 2 months ago, buyers for it at 220+ are relatively new, may have been worth different back then.

Can't see any other sales since I don't have premium, if you find anymore feel free to post if it needs an actual range.