No, I mean US/02.00 but how you did it is also valid if it renders when you do it in the admin.
If your struggling with imports then make up an example in the admin - Export it and then you can see the structure, you then just copy that and apply it to other products.
Just be mindful NOT to use illegal character sets and stick to Numbers for prices and letters for other attribute data to avoid any issues with the import/export (Which there are in this regard)