From my point of view, I prefer to develop cross platform apps. Dolphin is Windows only at the moment. Dolphin is an affordable Smalltalk. Price is, I admit, a sticking point with Cincom’s Smalltalk.,,the price is simply not available in the open, and I suspect it will be expensive for a one person developer who wishes to sell applications.
That's a natural conclusion to come to, but it's not really the case in that circumstance. Cincom as a corporate entity doesn't make prices public (for any product), and I have no real ability to change that policy. However, I can tell you to point your browser here, where I've detailed the basic VAR program. The terms listed there are the "no one negotiated anything" terms (meaning - you can always negotiate with Cincom sales).