The idea is to let players buy boxed versions of games directly from their GOG library and have them delivered to their homes.
If it's full blown 90s box art with a CD and the same price as the game you already bought, that would be terrible.
If it's something archivial quality that has a reasonable expectation to last and be installable for decades and is (mostly) a flat fee, that would be pretty cool.
Although you could still do it yourself more efficiently.