USPS Priority Mail is a great option. Tracking is provided. It is flat rated and has tracking included. My customers are very pleased with the quick delivery. Insurance is available up to $5000.
International customers: The small flat rate box has no tracking, but saves you about $14. Regular priority mail and express do have tracking, and arrive faster.
FedEx is available upon request. Please email me with your zip code and I can calculate the FedEx shipping for you.