Product images shot on a white background are used on the majority of e-commerce websites.
I usually shoot each item separately, making it easy to rearrange the products. Any discontinued items can quickly be removed and the rest simply rearranged. Clean white cutouts and drop shadows can also be added if required.
I like to replicate the same angles and arrangements in each photo. These examples show how putting like-with-like creates a simple repeating pattern. Most of the items were not shot at the same time. Meaning each new product has to be carefully adjusted until it matches previous shots.
I offer a quick turn around, next day service, where images can be supplied on disk or file transfer.