There are millions of internet retailers also know as e-retailers dedicated to selling product and services online. A lot of traditional brick and mortar retailers are putting up websites to service their customers.
Retailers will see their business grow as they expand their online merchandise selections. A typical store may only have enough room to stock a few thousand units of products but online, they can present a much larger assortment of products.
If you find a retailer online that you would like to sell your product to, you should go to their contact page and send them an email asking how you can become a vendor. Its best that you do not mention your type of product until they contact you back because they have less of a chance of rejecting your product before you have time to explain it to them.