Next-to-last time I ordered from there, it took 28 days. Package had been opened by Customs, but the "decoy item" the merchandise was inside hadn't been. It looked like a factory-sealed commercial product, and probably got glanced at, then the shipping box was resealed and released.
Last time I ordered... I am very thankful that it didn't get opened, because decoy item was in an unsealed box (simple flap closure), and the actual item itself... Well, without disclosing specifics, I can only say that it was cylindrical in shape, with no top, and the seeds were stuck inside. IOW, if a Customs agent had opened the outer box, he'd have found another box, flipped it open, and seen a nice collection of cannabis seeds.
I've received seeds in everything from a plain envelope with three tiny Ziploc-style baggies in it, to... a small teddy bear. I have only ever received one letter informing me that some of the contents had been determined to be contraband (and inviting me to call to schedule an appointment to discuss the matter, if I disagreed). Never had any seeds stolen during shipment. I have had a couple of miscellaneous - and 100% legal - items make it to the ISC in New York that serves this part of the country, and just disappear. Therefore, I am guessing that you're more likely to lose your merchandise due to thievery than by way of a Customs inspection. Still... I much prefer it when the order packer makes at least a token attempt to hide the merchandise.