im speaking from experience here, carts that you buy that arent through the state dispos you run alot of risks. a big one out here happening for many years was people were putting "terps" and vitamin e oil. and when i say people i mean shady unlicensed shops selling them at a massive scale. alot of the carts had bud with mold and pm. i used to work for some shady people i saw alot of shady shit going on. thats just what i saw i know there are other ways of "making carts" but all i will say is be careful bro. my bosses used to have clones of heavy hitters, brass knuckles, and many other top brands (even edibles). its super easy to clone products and is done ALOT out here. So if someone is getting deals on carts its cause they are fake especially from califorina 1000%. real companies arent gonna risk a license to backdoor some carts. they may get you high if they do have actual cannabis in them but more than likely they turned it to carts cause there was a problem. all love homie just trying to make sure you dont get jacked around with the cart bullshit.