Price drops when more people buy

Sony Xperia XZ Premium
G1842  |   Deepsea Black   |   64GB

Market Price
 $400 
Units Sold
21
Sale ends
Feb 28
FREE
$185
Price dropped
$160

I . AM + Buttons Wireless Earphones
Premium wireless Bluetooth earphones

Market Price
 $40 
Units Sold
50
Sale ends
Feb 28
$4
$20
Price dropped
$10

Google Pixel 3A
Unlocked | 64 GB

Market Price
 $300 
Units Sold
3
Sale ends
Feb 28
FREE
Current Price
$240
$200