I had used USPS (Global Express) last year. It cost me $17 then -- the price could have gone up to $20 now. The document got to KTM GPO Box in 4 days. However, I was advised the USPS may not always be realiable in terms of getting the documents delivered in the days promised. I was one of the lucky ones, I suppose. Inquire with DHL also. I THINK they may charge about $25.