On a regular base we introduce new features. Together with other developers we are always looking for better performance and integrations. Check our repository on Github or contact us.
There are complete packages on the market with turntables and special software and even with included 360 viewers. Good solutions but they also have a price and often you are locked in by a vendor. Image hosting doesn't have to be expensive and the integration of the viewer on your website is a one time investment. The only real continues investment is creating the images. Just like now with your product images.
You need a camera, lightning and a turntable to create images of good quality. There a lot of suppliers on amazon or Alibaba (starting from $15).
Use special software to edit the 360 product images, this software often controls the turntable and the camera. It also controls the filenames and the size of the export.
Integrate the 360 product images on your site. Add intro animations for getting attention. Use a/b testing for the best result. Check usage of the viewer by firing Google Analytics events when the user interacts with the viewer.