Hi,

I've been purchasing from US for some time, my last purchase is a camcorder from Amazon.
What I know is that customs will not charge any item if the declared price is less than $ 1,000.

Few month ago, I got a dvd player for my car for $500 and didn't pay any customs.

Note that I am using Aramex Shop & Ship which is a perfect service.
Check: http://www.aramex.com

Hope this helps.