Stop refreshing the product page.

Price trackers only work where they're supported: the big marketplaces, the browser extension's partner list. The page you're actually watching — the small shop, the brand's own store, the refurb outlet — usually isn't on it. So you bookmark the page and refresh it for two weeks, and the sale happens on the day you don't.

modsignal watches the page itself, so any store works. Tell it the deal you're waiting for — alert me when this drops below $200, tell me if a discount code appears — and it checks on your schedule and messages you when the price actually moves.

The alert shows the old price and the new one, so you can tell a real drop from a strikethrough-games "sale." For a single product page, the exact-diff tier is often all you need — it's the cheapest tier, and a price change is an unambiguous text change. Reach for semantic when the page mixes variants and you only care about one.

People typically check daily for wishlist items and hourly when a launch or sale event is coming. One monitor per product page keeps alerts unambiguous — you know exactly which thing got cheap.