I started to use them 2 years ago. In the first year no problems. After that it looks like they raising the shipping prizes and making mistakes. This is the time you need their service, but the service is so bad. Just a Chinese girl answer your email. I try to call the local number in the US, but no one picks up the phone. It becomes a big scam like many other Chines web shops.
We are sorry for the inconvenience we caused to you. Please check the limit of the countries here: http://pe.usps.com/text/Imm/immctry.htm
You can also check all of the available carriers with our calculator.
Generally there are two choices: First, ship your parcel with Fedex or DHL; Second, ship your oversize or overweight item with Fedex or DHL and another items with USPS.
We admit that there are some deficiencies in our service. But we always devote ourselves to provide superior service to our customers. USGOBUY is growing and hope you can understand and more valuable advice welcome.