I think the price has changed. There is a free version wich can only use free databases . In the paid version you pay for runtimes AFAICS. Last time I checked you only had to pay US$ 500 for the profesional version. Now you have to pay for the server but I'm not able to see the price. I hope it's reasonable and not the 10 per server of some other tools.
Or that they follow the morfik model (www.morfik.com). It was a promising tool, but it lacks grids!