Price monitoring
How many addresses a daily price check across several stores needs, why one IP starts returning wrong prices before it gets banned, and how to read prices from JSON-LD instead of the page.
Each page here takes one real job, counts the addresses it needs, names the ways a public proxy fails at it, and says when a paid pool is the cheaper option. No theory, numbers you can plan a run with.
How many addresses a daily price check across several stores needs, why one IP starts returning wrong prices before it gets banned, and how to read prices from JSON-LD instead of the page.