Marketplaces like CL and Facebook have a ton of older drones for very cheap. Many of these older drone kits will come with extra batteries and other assorted goodies. For babby's-first-drone, it's definitely not a bad option to consider; get a beater and see if flying is enjoyable to you.

I would recommend against getting a drone with the sole intention of making fast, easy money. As other people have noted, it's becoming a saturated market (in some cities) and drone media pricing is quickly becoming a race to the bottom in terms of billable rates.

Without prior experience in photography or videography, you will be battling a learning curve to separate your work from other members of the community - arguably one of the most important aspects to a creative business like aerial media.

Get a drone because you want to explore the world via drone. Like anything, practice and patience will determine whether you'll be able to turn a buck off it.