1. "I'm not feeling cool with buying an unfinished game"
> Then don't buy it? No pressure, buy it when you will feel cool.
2. "Why the delay?"
> What delay? It's not ready. Cooking takes time. Making games takes even longer.
3. [...] "give gamers an unfinished product and make them pay full price"
So you want to pay just half the price or want to pay just 10%, or just want 10% off? How about "not feeling cool with buying an unfinished game"? Will still be unfinished.
If you just want to pay less, just wait until is done, and after a while, there will be some Black Friday or something.
This Early Access version will be updated for free to the final version. So should be more expensive, because it's given more, not less, also given earlier, because we want it yesterday, though isn't ready yet...
Testing isn't required, I may pay and not do any testing, and even if I do, that won't be so good quality to ask to be paid.