Thumb Score: +26

Woot! [woot.com] has Pulse Oximeter Fingertip Oxygen Monitor for $6.99.
Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Price:
$8.01 lower (53% savings) than the reference price of $15

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