They're bundling all the short stories on Pottermore into an ebook series. (Link in the title.) Looks like they'll be priced around $2.99 US, which isn't so bad, but still. Why can't they space these things out more? I'm still saving up for illustrated editions and special House editions!
Edit: HAH! This was announced/released for pre-order today, and all three are already in the top 20 Kindle best sellers list. Hang on, let me find my surprised face. It's around here somewhere . . .