Correct

差价

/ chājià / 
Strokes

Definition

difference in price

Example

As a Noun

price difference/disparity

1
Pīlíng
批零
chājià
差价

price difference between wholesale and retail

2
Dìqū
地区
  
/
jìjié
季节
chājià
差价

regional/seasonal price differences

3
Suōxiǎo
缩小
chājià
差价

narrow/reduce the price difference