Cheap online backup services?

I am very impressed with this community. Hope I will get a good solution for my problem. We are a web based startup and working on an e commerce project. But it is completely different from a normal e commerce store. Our website development is almost completed and will be live within few weeks. Now we are looking for a dedicated backup solution to our data. One of our mentor suggested Storage pipe online backup solutions. But currently we are unable to purchase service from such a big company. We are looking for something cheap so that we can upgrade as the company grows. Do anyone here have knowledge about this? Please share your valuable suggestions. Thanks