That's right. Some workarounds to be aware, anything purchased from Roll20 Marketplace (and drag-dropped from the purchases in roll20, not downloading then uploading), will not count against the quota (anyone's quota). Those images are served from Roll20's account, not coming out of the user's upload quota space. Smart use of purchases in Roll20 Marketplace, such as a couple packs of large reusable multi-purpose maps, or a pack that has many/most monsters you'd be using, could be a real space-saver. Sound / Audio uploads usually take up the most space, if your friend the Free GM has ever uploaded a song or sound. Deleting just 1 sound can free up enough quota room for 10 more graphics. Your friend could email the art (JPG, PNG, GIF) to you, and you drag-drop it onto the tabletop (in GM mode, in a game you created). So then that art goes in your library and against your quota, but once you dropped it on a Page, the promoted co-GM can manipulate that graphic, such as resizing, rotate, or move around the page to set up for games. Or, last, yeah, your friend Upgrade to Plus or Pro subscription, getting higher quota. Also other people can GIFT the subscription to the Free GM.