Bullseye watches Facebook Marketplace 24/7 and scores every new listing against real eBay sale comps — confidence intervals, parts filtered out, no black box. 20-second adaptive scanning on Pro*, 5-minute scanning on Free. Free forever.
*20-second cadence per watch when running a single saved search. The adaptive scheduler scales with your watch count — multiple watches share a round-robin cycle (3 watches ≈ 1 min each, 10 watches ≈ 3.5 min each). More in the FAQ.
Three steps. No browser extension, no Facebook login, no proxy fees.
Step 01
Pick keywords, a city, and a radius. Add a condition filter or a max price if you want. Free gets you 3, Pro is unlimited.
Step 02
New listings hit a local scraper, get matched against thousands of recent eBay sales, and come back with a 0–100 score and confidence interval.
Step 03
Desktop notifications fire instantly. Email alerts go out within 60 seconds on Pro, or as a daily 8 am digest on Free.
The full deal-scoring engine, real eBay sale comps, daily email digest, and confidence intervals are free forever. Three saved searches, live Marketplace scanning, no card, no expiry. Pro is an upgrade, never a requirement.
We hate Marketplace tools that paywall the basics too.
Free is enough to use forever. Pro is for resellers and serious hunters who want unlimited watches and instant alerts.
| Free | Pro | |
|---|---|---|
| Active watches | 3 | Unlimited |
| Marketplace scanning | Adaptive · ~5 min/watch | Adaptive · ~20 sec/watch (single watch) |
| Desktop alerts | Yes | Yes |
| Email alerts | Daily 8am digest | Instant (60s batched) |
| Score breakdown | No | Full |
| Confidence intervals | No | Yes |
| Live observability dashboard | No | Yes |
| Price | Free forever | $9.99 / mo or $99 / yr |
If you spend more than five minutes a day refreshing Marketplace, Bullseye pays for itself in a week.
Furniture flippers, garage-sale arbitrageurs, eBay sellers. Stop refreshing the feed — get the alert, message the seller first, win the deal.
Mid-century furniture, film cameras, vinyl, denim. Set a watch once and Bullseye flags every grail that hits the right city for the right price.
Macs, GPUs, lenses, audio gear. The score knows the difference between a real M2 and a parts-only listing — so you can act before the listing's gone.
If yours isn't here, email hello@getbullseye.app.
Bullseye reads public Marketplace listings the same way an unauthenticated browser does. We never log into your Facebook account and never ask you to. Your account can't be banned through this tool because it's never touched.
No. Bullseye never logs into Facebook at all. There's nothing to store. Authentication on our side is just a Google sign-in to attach your subscription to an account.
The scraper runs on your own machine, which is the most expensive part for most tools to host. We pay for the cloud comp data and the email pipeline, not for a fleet of proxies. That difference passes through to you.
Coming soon. Windows is the launch platform because installer signing and code-signing are simpler there. The codebase is Python + PyWebView, so a macOS build is a packaging task, not a rewrite.
The desktop app polls Marketplace continuously while it's running. The scheduler uses a four-layer adaptive system: an exponential rate-limit cooldown, a slow-start ramp that warms the request rate from 60s tick down to a 20s floor as Facebook stays quiet, a half-open circuit-breaker that does a cheap HTML probe before risking a real request mid-recovery, and a round-robin coordinator that picks the stalest watch each tick. Per-watch cadence = tick × watch count: 3 free-tier watches ≈ 5 min each, 1 Pro watch ≈ 20 sec, 45 Pro watches ≈ 15 min each. Same engineering as the personal tool this evolved from.
Every score is anchored to real eBay sold-listing data, with parts-only listings filtered out. We surface a confidence interval next to the score so you can tell a sure thing from a coin flip. Methodology is on our blog.
Pro runs a second pass on high-score listings using an LLM that reads the listing text — it spots "for parts", "as-is", "shell only", and similar disqualifiers the regex pass misses. If the LLM disagrees with the initial number, the score adjusts.
Yes, anytime. Pro starts with a 7-day free trial (no card required) and a 14-day money-back guarantee after that. One click in the Stripe customer portal cancels — no email-the-founder song and dance.
Your email, your saved watches (so you can restore them on a new device), and anonymized usage analytics that you can opt out of in settings. Listings themselves stay on your machine — we never see what you're hunting for.
No credit card required. Cancel anytime.