The information on all of their different products is available here:
http://www.sidefx.com/filmtv/compare/
It is actually cheap - it is based on their full Houdini FX version, so we should be glad that we can get it at that price point. Note that it is a limited commercial license, similar to the personal edition of Unity - but unlike Maya lt, it is basically the full Houdini FX version, with some restrictions/limitations. If it is too expensive, give Modo indie a go.