Very few foods naturally have vitamin D. Fortified foods provide most of the vitamin D in American diets. 1  Fatty fish such as salmon, tuna, and mackerel are among the best sources.  Beef liver, cheese, and egg yolks provide small amounts.
Note: To contact a Seller requesting an invoice for an item Fulfilled by Amazon: 1  Go to Your Orders. 2  Click on the Seller's name, located below the item title. 3  Click on Contact Seller in More Information. 4  Fill out the information request form.
2. Search for the item you want to sell on the Amazon website. Search Amazon's database by selecting the category that you think best fits your item and by using keywords. Keywords could include the name of the item, title of the book or film, as well as the edition of the product.his will put the item on sale on Amazon. If you don't have a seller account yet, then you'll have to create the account and then submit the listing. If you want to know how to create a seller account, just follow the steps in the next section.