I've ordered close to 1000$ worth from doc. Only one envelope has been seized. That had probably 100$ worth of nirvana seeds in it. I think he just needs to make a new sending system.
One time my seeds got crushed, and he sent me a new pack with just a crappy pic of the seeds and thats it. It was Kali mist. Customs just knows to look for these now, and I would probably pick another company until he changes his shipping method.