Yep, no doubt you're in front.
When I ordered my custom pistons from the states I forgot to ask the seller to change the value on the invoice. When they arrived they were held by customs and I had to clear them myself, pay 10% and a small customs fee. They were valued at US$1000.
There are fee's with a SAC too, not much, but they are exist. Unless its changed within the last 3 months.
Either way you will still be ahead a massive amount. The States is an awesome place to buy these kind of parts at the moment.