Oh, I certainly didn't think you could or should restrict the idea -- as you say, it's an old idea that was already out there. But if people buy the particular setup, its perfectly reasonable to say you can't simply resell that setup. You started this thread by asking what people wanted to pay, so I've responded in kind. You can of course just give it away if you want to.

I think it's also a good idea to sell it with your own housings, as you propose. That's what I was going to do with mine. I was also going to point out to people that the light source could be used in lots of ways other than the housings I supplied, that they could freely use it that way in their public or commercial renders, that I claimed no patent or right to restrict the basic idea (with acknowledgments to SnowSultan), but that of course no one could simply resell my housing or my particular light object as supplied.

Of course now I'm just waiting to buy yours!

Bill