|Good thing to sell these, but silly thing to mirro the image.
CD/DVD resellers need to download ISOs first. An interesting way would be providing DVD ISOs only to resellers, or providing a script that converts all the CD ISOs to a DVD one so that the same data can be recycled (while only matching md5sums are official).
Apt-get people, that’s what debian’s all about.
I know it’s a bit silly, but begginners are very used to have everything from CD/DVD, starting from windoze software and other GNU/Linux distributions. Debian is truly for the apt-get people, but before apt-get newcomers want to take a CD/DVD.