One problem with pricing is that the cost depends on which module sets you require, and what sort of applications you have in mind. Your best bet is to give them a ring and discuss your requirements, I'm sure they will be very helpful. AFAIK, the lack of pricing on the website is not intended to mislead or deceive, but is simply because it's not straightforward. I should point out that I did used to work for these guys, though I don't any more, but knowing them, I'm sure they'll be able to help.