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Flippiness
Flippiness is a platform that identifies price discrepancies for books across different online retailers, enabling users to profit from buying low and selling high
verified Jul 12, 2026 · HTTP 200
CohortClass of 2026What it is
Flippiness is a platform that identifies price discrepancies for books across different online retailers, enabling users to profit from buying low and selling high. The service automates the discovery of arbitrage opportunities in the textbook resale market, streamlining the process of purchasing from one marketplace and reselling on another.
HTTP liveness
9 probes since Jun 16Jun 16Jul 12
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 12, 2026Back onlineAlive · 200 OK
- Jun 16, 2026First probe — unverifiedUnknown
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
550 products launched in 2026 · 100% still active
550 active0 sunset
Still active
100%
Median lifespan
4.9y