Coming soon

Know your max before the countdown.

Live auctions move fast, and the last few seconds are where collectors overpay. Bid Buddy is a browser extension that works out a sensible maximum for a lot before bidding opens, and keeps it in view while the auction runs.

Example — not a real lot

Bid Buddy · example figures

Example lot — one sealed booster pack

Live auction · bidding opens soon

Suggested max

$38–$45

Recent sales

$41 avg

Bid Buddy suggests $38 to $45 (example). You set the number; it never bids for you.
  • Based on what the same item sold for recently (example)
  • Shipping and fees added in, so the max is what you really pay

Example figures for layout only. A real suggestion will say what it rests on and when.

Advice, not autopilot

Bid Buddy tells you a number and why. It does not take over your account.

How it will work

  1. Add it to your browser

    A small extension for your computer's browser, linked to your Cardonomics account.

  2. Open a live auction

    Bid Buddy reads the lot and works out a sensible maximum before bidding opens.

  3. Set your own max

    Take the suggestion or type your own. It stays in view, so the last ten seconds do not decide for you.

Not open yet

Bid Buddy is being tested before anybody relies on it. When it is ready, this page will say how to add it and exactly what it does and does not do.

Nothing to install here yet. The grader preview is open now.