Rorrkonn makes a good point. A great many vendors do their own promos. A great many don't. Getting someone who is in the art charts to render your stuff should get you sales. Of course, those guys probably have a waiting list of products that have been given to them for exactly that purpose. And... most of the renders by the people in the art charts are, um, well, um... Let's just say, I wouldn't use them on my product page, anyway.

That doesn't mean you can't farm out the promo rendering to someone else. Depends whether or not you want to get a handle on doing your own promos.

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PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.