số lượng

giá

tổng giá

1

$0.0500

$0.0500

10

$0.0450

$0.4500

25

$0.0400

$1.0000

50

$0.0400

$2.0000

100

$0.0400

$4.0000

250

$0.0400

$10.0000

500

$0.0350

$17.5000

1000

$0.0300

$30.0000

3000

$0.0300

$90.0000

6000

$0.0250

$150.0000