Please do remember that when you are ordering from UK, Australian or European sites to read the VAT TAX
information carefully. The VAT Tax is similar to a sales tax and as far as I can tell, consumers from a different country are not exempt, businesses are if it's for resale. You can always ask.
The US Customs laws and rules seem to allow consumer imports for personal use up to $2000.00 I am assuming the companies know what paperwork is necessary and have procedures in place for US sales. To get an overview on the subject, go here. US Customs
When you order from advertisers by clicking through from this page I do get a couple of dollars for the sale. I appreciate your business and it helps with the expenses. Thank you.