Tomasz Lisowski UPDATE (21.02.2011): The Wingware licensing model has changed. Instead of the license being for the given operating system type only (and costing then around $175), now the license is for all supported operating systems (Windows, Linux, Max), but the price has increased to $245.
This change just means that the produce became even less accessible for developers like me (I am writing code for Windows almost exclusively!). Having it on BDJ is even more desirable now ...