What online collection resources do you wish you had?

Fyi I built this for personal use tailored around Japanese cards. I scrape Yahoo Auctions, Mercari, Goldin, RareCandy, and a few other auction sites and send alerts based on keyword matching. Below is my search for anything Bakaboon related:

OR(
    keywords["Bakaboon"],
    AND(keywords["CoroCoro"], "2002 6"),
    AND(
        keywords["Battle Road"],
        OR(keywords["Imakuni"], "2002"),
    ),
    AND(
        keywords["card"],
        OR(
            "こんな時代だからこそ",
            "サチコは思わずタカオを",
            "宇宙快速「ラピッドマスター」で",
            "ビキニスタイルの",
            "マーガレット・コズボーンが",
            "群衆が",
            "平家が",
            "大家さんを",
            "ルーファラ・コズボーンを",
            "あの頃のオレを",
            "封じ込め、そして平和がおとずれた",
            "映画化",
            "まだ勝負はわからないぜ",
            "ものまねをやるのだ",
        ),
        "bakudan",
    )
)

Where keywords maps to Japanese translations. So "バトルロード イマクニ" on JP markets (or “Battle Road Imakuni” for English markets) would cause an alert to be sent to me.

I haven’t scoped out alerting on specific graded-cards. Most sites store the cert ID so it is easy to look up against pop reports. I assume desired behavior in your case is to select multiple cards from PSA and CGC pop reports and receive texts/email when any of them pop up across multiple marketplaces?

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