Designer's note
Core idea: lists are products behind glass. You window-shop the covers, punch a code, the pack drops, and the list prints as a receipt whose length is the joke: price and paper both scale with the item count.
Homes for rich content: the pack face is each list's cover art; every blurbed line item carries a coupon-sized photo and a link; unblurbed items are themselves links; "sold out" slots tease lists that are coming; the "also bought" strip chains you to the next list.
Hardest to build: making a 100 item receipt funny without being a chore. The folds (tear-off sections) need real thought per list, and the glass needs to stay shoppable when there are 40 products instead of 10, probably as multiple machines in a row.