Display additional fields from included content with Entity Reference field
You can achieve this by setting a view mode (recommended: Teaser) in the node display for the entity reference field at /admin/structure/types/manage/[CONTENT_TYPE]/display, and then adding the price and picture fields to the Teaser display of the referenced entity.

If the referenced entity is also a node then it would have a similar path of /admin/structure/types/manage/[OTHER_CONTENT_TYPE]/display/teaser. The path would be different if it is not a node, but should be easily found for most custom entities through the UI under the commonly named entity page 'Manage Displays'. Once there view modes can be selected at the top of the page for editing them.