AdventureMaker.com

This stripped down version of Vue d'Esprit 8 is usually $99.00 (US), but is on sale for $9.90. It's the version of Vue that's one step up from their free Pioneer version, so though it probably does not watermark your renders, it likely is missing features like eco-systems and some of the fancier selections of plants. I know it doesn't allow for the use of Poser animated models. You can purchase modules to add on various features if you need them, but these cost extra.

Anyway, here's the sales page and feature list, if you're interested in checking it out -
http://www.cornucopia3d.com/purchase.php?item_id=8992&from=Sale&page=0