Underpriced collectibles disappear in minutes. eBay's own saved-search email shows up the next morning. Netletz re-checks your search (eBay every 2 hours, other sites as often as hourly), layers your own price and exclude-word rules on top, and alerts you on the next check after a match appears.
eBay is best effort: it sometimes blocks automated reads, so some checks are skipped and retried.

New eBay match — Leica M6 black w/ box — $2,250 — Used — US seller. Tap to buy.
On eBay (or Mercari, Etsy, Grailed, StockX, etc.), set every filter you can — keywords, category, condition, location — and sort by Newly Listed. Copy the URL.
Title must-include, words to exclude (parts, broken, copy), max price, required condition. Add plain-English extras like 'US sellers only' or '99%+ feedback'.
An alert on the next check after a real new listing matches — with title, price, condition, and a direct link.
Leica M6 black w/ box
$2,250 · Used · US seller
Jordan 1 Chicago '85 — sz 10
$3,400 · DS · StockX
Vintage Patagonia Snap-T fleece
$58 · XL · 99% feedback
One missed flight deal or sold-out campsite costs more than a year of Pro.
Catch one thing you'd otherwise miss.
For the handful of things that always seem to slip through.
When 'first in line' is worth real money.
Every new account starts with 14 days of Power — 15 Watchers, 1-minute checks, texts and the AI page watcher, plus 1 ticket watcher at 2-hour checks, hourly in the final 48 hours. No card needed. Afterwards you move to Free unless you pick a plan; we remind you on day 11 and day 13.
Check speeds are the fastest each plan allows. Plan speeds apply to weather, metals, stocks, crypto and forex, and to campsites on Recreation.gov, California and Virginia. Page reads (Amazon, AI, webpage and ticket pages) run at most hourly, eBay listings every 2 hours, AutoTrader every 6 hours, gas station prices every 3–6 hours, ReserveAmerica campsites every 2 hours, flights every 2–6 hours until 30 days out, and domains once a day.
Prices in USD. Cancel anytime. Taxes calculated and handled automatically.
Set up a listing watcher in 30 seconds. The next matching listing alerts you directly.