Don't forget to sprinkle images throughout the shopping manual. Pictures are worth a thousand words, and they do a great job of holding the attention of your readers. You can go one of four ways with pictures
exels.com, Unsplash.com, and many other similar sites provide free stock photos for your use. Simply searching Google for "free royalty free images" will return many results.
A membership to Shutterstock or a comparable service is available for purchase. (By far the most costly alternative). Another option is to purchase images from Shutterstock through one of the vendors.
You can either take the photos yourself or contract a professional photographer to do it.
To grab a picture from Shutter, use one of the free tools available.
Make sure that your images are distinguishable from others in Google's search results whichever route you take.