If you get WA22, problem in saving minimal price of devices. If there are several popular devices, you need to display the one with the cheapest price
Try test:
a
htc
10000
b
nexus
10000
c
htc
99999
d
nexus
10000
e
htc
5000
f
nexus
10000

answer is htc (the most minimal price is 5000)