A few points about this. I believe a drop isn't particularly helpful or accurate.

1) Past offer 175k: https://imgur.com/a/BGXAXVl

2) I have had notifications on for this every time buy orders have risen above 150 and just today they reached 161.4 before crashing back down. This is a near daily occurrence:

https://imgur.com/a/KDQybDM

3) Gladiator has it on record that recently on at least 2 days buy orders have reached 150+ on both 21/02/23 and the 25/02/23. They have been higher than 150 on more occasions than this but none at the specific snapshot time for that day on gladiator: https://gladiator.tf/time-machine?item=Green+Black+Hole+Berliner%27s+Bucket+Helm&at=2023-02-01T02%3A01%3A00.000Z

4) I also bought this so fast that gladiator doesn't even show the drop to 150 on classifieds:

https://gladiator.tf/time-machine?item=Green+Black+Hole+Berliner%27s+Bucket+Helm&at=2023-01-01T02%3A01%3A00.000Z

As a final note the suggester doesn't seem to believe single example quicksells should be used as valid proof for his own hats price drops, but instead should only be used as enough proof for others for some reason: https://backpack.tf/suggestion/63d50d019d45db4987040f7f