Adobe Stock has over 60 million curated images, all in HD quality and ready to use legally in your work, under Royalty Free license. These can be monthly or annual, and they go from just 3 downloads a month up to 750 images a month.
What Sells Best On Shutterstock?
Some types of photos that sell best are Portrait Photography, Food Photography, Landscapes (usually with people) and fine art photography (artsy).