Above quote is negotiable and depends on the features added in the product. We are team of 4 senior developers having 6 years experience in developing enterprise level software in MNCs like Symantec, TCS. We have expertise in C++ on windows and unix, C# .NET. I have experience of 3 years in developing backup and recovery solution. I have experience in developing backup and recovery client for windows which backs up data to server and cloud (Amazon S3 and Mezeo) in the previous company. Solution provided us will be generic and you can easily customize it for other clouds also. You can consider adding more features like Parallel upload, Bandwidth Throttling, Incremental Backup. More details mentioned in the mail sent to you. So please go through the detail e-mail. Thank you