The compare-at price is what makes a product look like a deal: the original price shown with a line through it, next to the lower sale price. It's one of the most effective conversion levers in ecommerce — but setting it across hundreds of products in Shopify is painfully manual.
Why it's slow by default
Shopify's bulk editor lets you edit the compare-at column, but you still type each value by hand, row by row. To "show everything at 20% off," you'd have to copy each current price into compare-at, then calculate and enter the new lower price for every single product. For a catalog of any size, that's an afternoon gone.
The one-command way
With Claude MCP Connector, you describe the sale once and Claude does the arithmetic for every product:
Each product keeps its original price as the compare-at value, so shoppers see exactly how much they're saving — and you didn't touch a spreadsheet.
Other compare-at moves you can make
Clean up when the sale ends
When the promotion's over, one message — "clear all compare-at prices and put everything back to full price" — resets the whole store. No leftover fake sale tags, no missed products.