Urgent questions: How much should I pay if I wanna use a image for 2 years ???????

Hello, here I've got a question, I bought 2 images yesterday, and I paid $11. My question is if I wanna use these 2 images for 2 years, maybe put them in the TVC or somewhere else, but only use these images in China,that means once we paid, no matter wherever I use, how long I wanna use, it's always the same price. Or I need to pay more for 2 years