Dinoraul makes some excellent dinosaur models.

http://www.renderosity.com/mod/bcs/?vendor=Dinoraul

There even a t-rex there with an extended license.

The thing about creature modeling is that there are a few specialized vendors who really target that market and produce very nice products. It's a very niche market and they've already got it fairly well covered. The exception might be with certain one-off sorts of models that come out of the blue and don't have a specific type of IP/Theme already ingrained in them. Those are probably a bit difficult to predict in regards to sales/viability.

Plus, making a full figure, well, isn't easy. It takes a bunch of work to do right.

Good luck!

I know Dinoraul, he is one of the best modeler about dinosaurs but its not what i wanted.. I used that model for ages.. but its not the "right" T-Rex.. As i said i am looking for JP style.. DR's models are using modern concept of realistic dinosaurs (especially with feathers).. Dinosaur fans are divided about this. Most of them (including me) likes JP style dinosaurs and some few who likes more mammal/feathered looking ones.. When you check all the dinosaur content market as toys,cinemas,games you can see this clearly and its a great opportunity for modelers. I know to create a figure is very hard thing to do but they are many people who models out there.. You can see it at any other internet markets about 3D models for 3d studio or maya. Poser just loses it more and more.. And after daz3d passes to genesis, poser became full of "victoria 4 and her cloths/morphs".. Nobody can deny this. I am using poser since poser 5... This is out of topic anyway..

Check this 2 models and you will see what i mean about T-Rex models:

This is a T-Rex model should be: http://robertfabiani.deviantart.com/art/Tyrannosaurus-Cerberous-Rex-539893131

This is DR's rex: http://www.renderosity.com/mod/bcs/tyrannosaurusdr2/99674/

as you see they are TOTALLY different. If you try to use DR's rex at a movie or game, people will ask you what kind of a dinosaur is that, and when you asnwered "its a t-rex", people will just laugh..