Web scraping: A comprehensive guide

There are two ways to catch a price drop on that obnoxiously priced all-terrain dog stroller you’ve been eyeing (but won’t admit out loud to the general public—which, smart). You could check the product page every morning and hope today’s the day for good boy Professor Waffles. Or you could let a price tracker like camelcamelcamel watch the listing for you and send an alert the moment it dips below a set price.