Who it is for
A Magic: The Gathering collector or reseller in the UK who buys sealed product and watches prices.
Boostermage
Sealed Magic: The Gathering price comparison across UK retailers
Overview
What Boostermage does
Boostermage is a price tool for sealed Magic: The Gathering product sold by UK retailers. A search returns what shops are charging now, together with the history behind those figures and the range the market has moved through.
The app also tracks the supply side. It reports whether an item is in stock, flags restocks, and lists releases that have been announced but have not arrived. Discounts and recent reductions can be surfaced directly, and the catalogue can be browsed by set or by retailer instead of by search term. It is published by an independent developer, Frank MacDonald, rather than by a shop or a distributor.
What stands out
Limiting itself to sealed product and UK retailers keeps the price history and restock tracking specific rather than global.
Availability
Where Boostermage is listed
Boostermage is listed in the ChatGPT apps directory only. Frank MacDonald has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
In the ChatGPT apps directory
- Developer
- Frank MacDonald
- Filed under
- Other
- Listed since
- June 2026
- Authentication
- Authenticates when installed
- Website
- boostermage.com
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
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This is an independent catalogue entry compiled by Node8 from Boostermage's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Frank MacDonald, and inclusion here is not an endorsement.
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