Basically the EULA states that any mesh created within Speedtree remains the property of IDV (Speedtree's developer). There is no ability to distribute as a subsequent retail product, nor even as a free shared offering. Not too dissimilar to E-on's foliage creation software , The Plant Factory (if you are a Vue user there are some fair options). With IDV, Meshes can only be shared as a work product within a licensed site. Sucks. But, this policy undoubtedly protects a large retail library of pre-made trees and misc. foliage, rough average individual cost about $49 US. The upper level Speedtree app includes the complete library, and as I calculate based on sale pricing for the app w/o the library ($1,999) vs the top retail of $4,999 the models are a major revenue generator. E-on (and their dev community) must make a fair sum off their plants as well. So... Well, the software is very well thought out, stable, mature and a major player in the AA market of video games and film. It's hard to explain how simple and quick it is to put together reasonable foliage models, Speedtree is aptly named. But, this ZB plugin looks very cool and I'm sure some brain cell are going to suffer as a result.
