Best landing page video creation services?

You know the videos I'm talking about.

Every video you see on the top converting product landing pages (IM, weight loss, fitness, whatever).

Some of the videos are colorful, some are "hand drawing" style. What are the top services to use for these videos?

And by "top" I mean best quality for best price.

Maybe there is some method to create them easily yourself?

I really didn't understand actually what are you saying and what are you asking. Can you please explain in details.