If your into 3D art, then you will be happy about this offer. zBrush, an advanced sculpting program, is available for 45 days. On the downside, after the trial, the cost of the program for an average person is around 700 dollars. On the upside, it's a fully functional trial. Note, they also offer a similar trial of a similar program which helps out your zBrush rendering. Finally, there is always the option of using the free program Blender, but zBrush is the best around.