Everything You Need to Bid Smarter

The mac.bid Overlay gives you instant price intelligence on every auction lot. Here's what's included.

Overlay Panel

Appears automatically on every lot page. See high, low, average, and median prices from recent sales. A compact histogram shows the full price distribution, and the total cost line factors in buyer's premium, lot fees, and tax.

Research Modal

Click any lot to open the full research view. A price grid shows retail price, instant win, average sold, median sold, average total cost, and median total cost. Product images, condition badges, and quick links to Amazon, eBay, and CamelCamelCamel are all in one panel.

Total Cost Calculator

Enter your total budget and instantly see the maximum bid you can place. The calculator factors in buyer's premium percentage, per-lot fees, and your local tax rate. A visual cost bar breaks down each component, and a bid step reference table shows the total cost at every bid increment.

Amazon Price Comparison

See similar items currently on Amazon with prices, ratings, and Prime availability. CamelCamelCamel price history charts show whether now is a good time to buy.

Watchlist Monitoring

Price overlays appear on your mac.bid watchlist cards too. See key stats without clicking into each lot.

Customizable Settings

Set your local buyer's premium percentage, per-lot fee, tax rate, and savings calculation presets in the extension popup. Settings persist across sessions and apply everywhere automatically.

Extension coming soon to the Chrome Web Store.