Actually, according to what I saw on the main KS page, nothing was said about the lifetime access as being KS exclusive.
You could also argue that you were only supposed to get two months of early access, and you've actually gotten more than that. Many of us that are waiting would've been glad to help out with debuggng things. I know better than to get my hopes up too much about the stability of a product that is in Beta testing. You also got the nifty Alpha Wolf badge, and get to be listed as a supporter.
And I'm just playing devil's advocate. I'm not saying that it should be cheaper than $250. I actually think that $250 is a pretty fair price. . . Although it's hard to tell, without knowing more details about what's included in the highest tier, and without being able to actually play around with the software.