All funding is processed after our project reaches it's funding deadline. (April 11th) Typically, it takes 1-3 days to process all the transactions. That means you can pledge at any amount during the duration of our project, but your card won't be charged until the deadline.
Also, as of this writing, our project is successfully funded. (Yay!) That means all contributions we receive will be processed at the end of our project's duration.