Those are all good tips (even though they are tips for illegal activity ).

The main thing is don't bring the old stuff back!! If you have the old stuff in your car, they will want proof the new stuff wasn't bought there!

My brother got caught with a bunch of new clothes in his car. He didn't have receipts for the stuff (paid cash, didn't keep them). They ASSIGNED a value to them (a very HIGH value), and went through the labels to see where the stuff was made, and charged him taxes AND duty on the high value! Only way he can get any of that back is to now provide receipts for the ACTUAL value and go through months of red tape! They PROBABLY also have a record of his license number, and will PROBABLY watch him more carefully in future!

Like I said, you can USUALLY get away with it, BUT....IF you are caught, the hassle and cost will be ten times worse than what you saved all the times you got away with it!!