Fazrulhafiz,
Lots of ways to bring data into Commerce.
https://drupal.org/project/commerce_feeds
This will work with the Feeds module to bring in content from a specific source (uploaded CSV, RSS feed, etc) on a regular basis and update, add, and generally maintain changes from source to site.
https://drupal.org/project/commerce_migrate
This will work with the Migrate module to help you transform and tweak data and run a "migration" script that is designed more to be run once on a single data set, but can be much more powerful than the Feeds solution if you're comfortable with PHP and Object Oriented programming.
https://drupal.org/project/commerce_services
This will work with the Services module to help you open up an API that lets you do just about anything you could do on the backend of your Commerce store (create orders, create carts, checkout, create customer profiles, etc).
Josh
Comments
Would love it if you could document what you did for others benefit :D
Thanks,
I plan to but I need to finish up the project first.