I cancelled earlier, but now I've changed my mind. Can I get my site back?

Maybe. Your site is not actually destroyed when you cancel, so you may be able to restore it to exactly the way it was before.

Visit your account pages at http://www.indiemade.com/user. If your site is marked as suspended, just click on the link reading "authorize a new monthly payment" to restore access immediately. You'll have to OK a new payment through PayPal, but your site will be turned on immediately. If you see the text "Site no longer exists," then you'll have to create a new site from scratch at the signup pages.