"They should have kept it at $600 and increased the total needed for the project." - The reason the curve levels off isn't (entirely) because the cost is $200 more. It's because the 'limited time' offer caused a lot of people to buy it FAST, people who may have not bought at all. Personally I did not purchase, but I was very close to almost entirely because of the "limited time" appeal that $600 offer had. If it was a permanent $600 price point I wouldn't have even considered it.
