In our case the free evaluation copy is the public NetBSD sources, although we support a range of additional hardware which we have not (yet) contributed back. We don't normally give out evaluation copies, although we would probably do it if a prospective customer required it to complete a sale. In some cases a hardware company will hire us to do a port, and will include an evaluation copy of the software with evaluation hardware. Those evaluation copies are not crippled nor are they under a different license, though of course they do not come with any support. Pricing for the basic software without support ranges from $3000 to $10,000 depending on the hardware platform--generally newer stuff costs more, less common stuff costs more.
Excellent information, Ian. Thanks.
Again on words. It seems what you sell is not "open" after all, because you "have not contributed back yet". Your selling the future. That's a fine model, but again, what you sell, *when* you sell it, is not open.
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