Is hosting multiple images on a Vercel static site a good idea, or is it more cost effective to use a CDN? I tend to stay within the $20 budget for my site's usually on vercel, but was thinking of adding multiple images to one of my sites, would I be better using a CDN for this in terms of cost effectiveness? I host multiple static sites on Vercel overall. Would the 1TB traffic on there main $20 plan be enough long term?