How much postage to send a 9x12 envelope to China?

As of my last update, the cost to send a 9x12 envelope to China via the U.S. Postal Service typically starts at around $25 for International Priority Mail. Prices may vary based on weight, delivery speed, and any additional services like tracking or insurance. It's best to check the USPS website or visit your local post office for the most accurate and current rates.