Seedboxes are definitely worth it. They generally tend to have much faster speeds than a conventional residential internet connection, and they can leave your torrents seeding, even when you turn your computer off, or in my case, when the internet drops because it's getting stormy outside and the VPN doesn't want to play nice with my MLPPP setup.
Also, due to the nature of the speeds of seedboxes, it can be a great way to boost your ratio in a hurry.
