Image from Gratisography
Creative Market sellers pick their own prices and yes, you usually have to pay for the resources you find in their shops. There is also, however, an ever changing offering of free downloads including photos, illustrations, Photoshop brushes and graphics. Not loads, but what is put up for free download is usually of a high quality.
Unsplash is a Tumblr blog posting 10 royalty free images every 10 days. They’re high res and you can do whatever you want with them, so if you’re looking for quality photographs for a project it’s always worth checking here first before you pay for them.
This is another great source of free images you can use on both personal and commercial projects, with new photos added weekly.
Subtle Patterns is an expanding collection of tileable textured patterns. There’s a Photoshop plugin which you have to pay for, but downloading individual pattern files is always completely free. They’re great for jazzing up dull backgrounds.
Looking for free scalable vector icons? Look no further. Font Awesome incorporates over 500 icons with the inclusion of just one CSS file, and it’s completely free for commercial projects.