A professional presentation designer can charge around 15 dollars per slides. Video presentation will cost around 500 dollars for per 2-minute video only.
Cost effective is to make a presentation by yourself and using a pre designed ready-made professional looking Google slides or Powerpoint templates.
Students, teachers and freelancers are welcome to download presentations and use high quality templates for free from this site.
Default Presentation layouts only have placeholders for content and basic design. Slidesboss offers to download pre-built presentation templates with ideas for finishing slides and how to present content.