Pennysku blog
Notes from the team. Glitch retros, scraper engineering, the occasional rant.
- 2026-04-28
How Glitchfinder catches a price error
Anatomy of a glitch: from the moment a retailer mistypes a price to the moment a Discord message lands in your phone.
- 2026-04-28
The 5% floor: why we reject scam-priced rows
Why a $17.99 ASUS laptop never makes it into your alerts, even though the scraper said so.
- 2026-04-28
Per-store inventory: how Pennysku tells you where to drive
When the SKU is at $0.06 nationwide but only 3 stores have stock — we tell you which 3. Plus aisle and bay.
- 2026-04-28
Barcode scanner + drive routes: the on-the-ground flipper toolkit
Two small features that turned Pennysku from a watchlist into a field tool.