Option 1   Using amazon.com as a buyer (Without sellercentral)
1. Go to your amazon storefront page.
Go to amazon.com as a regular customer & look for one of the product you sell (you need to see your product on the amazon website).
On your product page, click on your seller name (Written into: This article is shipped by ”your store name”).
Congratulations, you reached your amazon storefront!
2. Your seller ID is into the URL of your storefront (The highlighted code at the end of the URL):