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USB Polygraph 2: Police Edition - Home Lie Detector MachineFree ShippingUSB Polygraph 
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115 Polygraph Lie Detector deals are available from:
Amazon, eBay stores, starting from $1.29.
The biggest discount we found is 46% on USB Polygraph Real Lie Detector at eBay.
The lowest price we found is $1.29 while the highest is $4,621.80.
Prices for the best Polygraph Lie Detector deals average at $139.25.
Last updated on May 25, 2025.
We scanned these quality online stores and more to deliver you with the best offers online available for Polygraph Lie Detector.