Its easy to spend over 3000 dollars on new graphics software, and even more on the hardware needed to run it.
Here is a little known fact: You don’t have to spend anything on software to have top quality graphic tools at your disposal.
For 3d, there is Blender 3d. Its the most diverse 3d graphics suite out there, very stable, and high quality.
For raster based graphics, there is Gimp, photoshop’s free rival.
And for vector graphics, check out Inscape, a high quality vector editing package, also free.
The bottom graphic was created using them.