Free proxy lists are genuinely useful, but it's worth being clear-eyed about what you're trading for the lack of a price tag.
What free gets you
No cost, no signup, and instant access to a working set of IPs at any given moment. That's real value for one-off tasks: checking a geo-restricted page, testing scraper logic locally, or learning how proxies work before committing to anything paid.
What you give up
Uptime isn't guaranteed — proxies disappear from lists because they go offline, not because anyone removes them promptly. Speed is inconsistent since you're sharing infrastructure with everyone else pulling from the same list, and there's no support if something breaks.
What paid providers add
Dedicated or rotating paid proxies typically guarantee uptime, offer authenticated access so only you can use a given IP, and provide support. For anything business-critical — production scraping, ad verification, brand protection — the reliability difference usually justifies the cost.
A reasonable approach
Use free proxies for testing and casual tasks, and treat a paid provider as the next step only once you have a workflow that actually depends on consistent uptime.