How Binders Work
The recipe
Bulk arrives through the buylist and gets sorted by hand. When the sort turns up a deep stack of one card, that stack becomes binder feedstock: the same card, sleeved into every pocket of a binder, wall to wall. The listing states the exact count and the exact card ("360x Eevee, Surging Sparks 143/191" means precisely that), and the card scan links to its market page so you can price the cardboard inside yourself.
The cover
Every binder wears an original commissioned cover by a named artist. The artist is credited and linked on the product page and paid under a written agreement, because credited artists are partners, not clip art. No two binders share a cover.
Why anyone buys one
Some people buy the joke. Some buy 360 copies of a card they love in a form that displays well. Vendors buy them as ready made trade stock in a package that sells itself. All three are correct.
Want one that does not exist yet?
The binder line follows the bulk. If the buylist keeps eating stacks of a card, a binder of it eventually appears in the gallery. Artists who want to paint a cover start at the artists page.