I'm curious where the costing came from (since $30k barely pays a good designer for a few months). The reason for asking is that I'm wondering why the original goal wasn't higher? Is it really that you didn't forsee that level of support? This is a common reaction from startups that are amazed that their $10k goal suddenly spiraled into millions. Often the reaction is to add lots of unrealistic stretch goals which delay the project.

As for most backed, I think relaxing the early bird deals clinched it for a lot of people (including myself). I have a lot of respect for Kickstarters that offer a flat pricing for the base product.