Ad-supported Kindle 4 has built-in $30 "upgrade", gets rid of embedded special offers

Was it too cheap? Well, here's some great news for fourth-generation Kindle users already tiring of its embedded ads looking cheap alongside their Vertu phones. You can now pay Amazon the requisite fee and unsubscribe from built-in advertising and offers. Visit the Manage your Kindle webpage and you can edit your subscriptions for the newest entry-level e-reader. There seems to be no option, however, to do the reverse just yet. Would Amazon hand over $30 to push those special offers into our currently ad-free Kindle?