Keep in mind that beyond your proprietary site, selling goods on third-party platforms involves unique demands. If you’d like to use Amazon or eBay, for example, you will need to carefully ingest their specific image requirements. This is where the science of photography sneaks in, blending concepts of pixel count, scalability, and (most important) avoiding copyright infringement.
Making things more confusing are the product-specific difficulties in capturing clean images of goods like jewelry, clothing, and extra-large items. Consulting an online expert is your best bet.
Some basics to get you started: