Where the numbers come from
Rip sites publish a stream of what just came out of their packs. We read that stream every three minutes and write each opening into our own database: which pack, what it cost, which card, what the card was worth at that moment. Each opening is stored under the identifier the operator gave it, so re-reading the same window adds nothing twice. Free promotional openings and anything with no price attached are excluded, because neither tells you what a paying customer gets.