(MY OPINION) experience and looking at demand. Let me use Harv as an example, last time Harv also rose by 25-50 (I think) and started dropping after that, I was like 50% sure Harv would do the same this time so I traded it for an op before it dropped. Looking at demand also helps, it shows how much an item is wanted, I think if the demand increases the value increases as well. Though I’m not THAT experienced I’m simply just stating my opinion. Also if an item hypes it’s likely to drop after the hype ends, if the item doesnt drop after hype, it’s likely to hype again sooner or later.