Keeping it simple. Just one tier that includes everything. 11 plants and trees, 8 fractal artifacts, and 5 different props. 24 different models all told, plus pre-supported and split versions when necessary. You'll also receive all stretch goals that are unlocked. Remember: All rewards are for digital files only.
Everything in the lower tier plus an extended license to sell prints or use the models in games, VR, and other digital design projects. You'll also get high resolution source files for even more detailed sculpts.