If Prisync's $99+/month feels like overkill for tracking a handful of competitors, you're not alone. Here's an honest rundown of the cheaper and free options — including one you pay for once.
Most small sellers don't need an enterprise pricing-intelligence platform. They need to know when a few competitors change prices or go out of stock. Below is a straight comparison — no fluff, and yes, the free options are listed too.
| Tool | Price | Best for | Catch |
|---|---|---|---|
| Prisync | $99–399/mo | Mid/large catalogs | Pricey; SKU tiers jump; +20% for API |
| Price2Spy | $39.95/mo+ | Mainstream marketplaces | Still a monthly bill |
| Pricefy | Free / $49/mo | Up to 50 SKUs free | Caps on the free tier |
| changedetection.io | Free (open-source) | DIY/self-host | Fiddly setup; you host it |
| PriceProbe | $19 once | Small sellers who want to own it | You run it yourself (5-min setup) |
If those fit, use them. The gap they leave: the free SaaS tiers cap you, and the open-source route takes real setup time.
PriceProbe is for sellers who track a handful of competitors and would rather pay once and own it than rent a subscription forever. It's a tiny tool that scrapes competitor product pages, detects price/stock changes, and gives you a clean report — runs on your own laptop, your data, no monthly fee, no SKU caps.
There's also a free, open-source version if you'd rather self-host: github.com/willylam2222-bot/priceprobe. The $19 packaged version just adds a double-click runner, a step-by-step guide, and support for non-technical sellers.
Get PriceProbe — one-time $19, no subscription →Prices as of 2026, from each tool's public pricing page. PriceProbe is an independent tool, not affiliated with Prisync or the others.