With Fresh Store Instant (Fresh Store Builder) you can add products easily using any of the methods below.
Auto-Populating- You can setup keyword or browse node populate settings and it will automatically add products to that category.
Add By ASIN - You can add multiple ASINs at once to your store. You can also choose to drip-feed the products into your store instead of adding them right away.
Search Tool - We have a simple search tool that will let you search by keyword or browse node. From the search results you can quickly pick the products you want and what category to add them to.
Please see the guides at http://guides.freshstoreinstant.com/?q=adding%20products for full information on how FSB works and adding products to your store.