Definitely has happened. Everyone always says finished products is safer, but when a bottle breaks all of the sudden you may get a knock on the door.
With a reshipper, it’s sent to the domestic warehouse. Meaning if a bust did occur, raws and large amounts of oils might be looked into.
After all my research, it boils down to man power. If a bust were to occur, a few vials isn’t on the top of the priority list but 1kg of raws surely would be. With that being said, I haven’t seen hardly anyone post about a U.S bust on this board. Only Sweden, which is to be expected tbh.
For everyone saying that you’ll get a letter, let me ask you this, how would you get a letter with a reshipper service? You wouldn’t. It would have to be a bust at the reshipper and after you get an individual visit.
So, my “paranoid” opinion is that if you’re ordering tons and tons of vials the risk of raws in a small amount wouldn’t be much different. In fact, less likely to break which keeps usps out of your shit.