Some recent fitness auctions on eBay:

Sports Blood Pressure/Oxygen Heart Rate Fitness Smart Watch Wrist Band Bracelet

$16.99
End Date: Tuesday Sep-11-2018 1:26:56 PDT
Buy It Now for only: $16.99
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Superhero Superman 3D Marvel Avengers Panther Compression GYM T-shirt Fitness
$8.99
End Date: Sunday Sep-2-2018 9:50:01 PDT
Buy It Now for only: $8.99
Buy It Now | Add to watch list