There's a million reasons someone might miss out on a Kickstarter campaign. Maybe you just didn't have the funds at the moment. Or you set a reminder, but missed it. Just because the clock's run out doesn't mean that you've missed out on it all if the campaign allows Late Pledges. That's just what we've got here for Marvel United.
From the website:
All late pledges come with the same stretch goals as regular pledges. You will receive an email with your pledge manager link once the pledge manager goes live where you can enter your mailing address, add optional items (or even multiple pledges) and pay for shipping.
If you want more than one copy of Marvel United, please back once, and you will be able to increase your order in our pledge manager at a later date.