I usually wait till after 48h. I was initially concerned over the lack of ability to track the package... I've had sellers twice send packages through DHL(or they say...), given a false tracking number, and the items never arrived. Had to open a PayPal dispute for one, the other one was refunded promptly after talking with the seller.

I'm at peace for now, since I can actually track it. It may or may not pass customs since it contains knives and lock picking tools.