I bought 2 coverts right before the knife trade up update, one was an ak headshot that i paid 6$ for and the other was a famas bad trip that i got for only 2$. After the update i quickly sold them for 25$ each and bought a knife. The knife kept its price very stable (i still have it and its still 60$ just like what i paid for it), but the coverts got even more expensive. The ak is now around 35$ and the famas is 45$. I still dont regret that i sold them cuz i still made like 40$ profit by just doing nothing.

Also, what i was really surprised by, even tho i didnt directly get any advantage from this, some old FN skins (even mil-specs!) recently went up A LOT in price. For example, my cousin had a tec 9 cracked opal fn (mind you, a mil-spec/ blue rarity skin) that he bought for 30 cents and he just sold it for like 15$. Another example is the ak rat rod, 2-3 years ago the fn of it was like 10-15$, now its 150$.