Just depends on what exact accessories you're looking for, but there's plenty of stuff available from sources in the US. In all the work I've done on my Phantom and F550, I've only had to order something from China once.
Here's one US shop that has transmitter straps, I've seen numerous others: http://www.amain.com/index.php/cPath/61 ... eck-Straps
This is the timer I was using on my Phantom controller, and there's many other cheap options @ Amazon: http://www.amazon.com/gp/product/B004PY ... UTF8&psc=1
Let us know what else you're looking for and we can help point you to good sources.
Here's one US shop that has transmitter straps, I've seen numerous others: http://www.amain.com/index.php/cPath/61 ... eck-Straps
This is the timer I was using on my Phantom controller, and there's many other cheap options @ Amazon: http://www.amazon.com/gp/product/B004PY ... UTF8&psc=1
Let us know what else you're looking for and we can help point you to good sources.