Imagery is one of the most important parts of the ecommerce process, particularly on the product page. Users can’t see your product in real life or reach out and touch it (at least not yet anyway), so the imagery has a lot of heavy lifting to do. I've lost count of the number of user tests I've watched where users have got excited about looking through lots of photos. It should be the first thing they see on the page, to give them reason to look through the details.
Your imagery should feature consistently styled photography, and could also involve video. Even just a short clip of video can get across a lot more information than the best photo, especially for products where scale and fit are important to understand. Photos or videos with humans present really help add context and make something more real.
If you're selling experiences or something less physical, imagery can still be important to show the benefit of the service. For example if you're selling cheese tasting, the product isn't lumps of cheese but people gathered together enjoying themselves and learning. Don’t fall for convenience and just put up the first pictures you can get your hands on. Put some effort into your styling and have a look you can own; it will help you stand out from your competitors.