Search for a command to run...
Hyper Blue Lvl4 is obtainable from the Cargo Plane Robbery, in order to get a lvl4 one, you need to have a lvl3 hyperchrome in your inventory.
With Blue LVL5 continuing to perform worse, it shouldn't come as a surprise that Blue LVL4 has been performing way worse aswell. As grinding Blue LVL4 isn't worth it due to the LVL5 dropping, this leaves Blue LVL4 scrambling to trade it for anything they can, usually settling for lowballs as nobody wants to trade for it currently. As it continues to struggle, with it's future being quite uncertain, the unstable tag is being added aswell, as this clearly won't be it's last drop.
Supply is widely distributed — no single holder owns enough to register as a hoarder.