Optimization Models

EAN: 9781107050877· Price history

Go to best offer · 71,56 USD ♡ Track price

Lowest (90 days)

71,56 PLN

2026-08-09

Average (90 days)

73,24 PLN

Highest (90 days)

74,91 PLN

2026-08-08

Current price

71,56 PLN

3 hari yang lalu

30 days 90 days 180 days 1 year

Price history
Diperbarui Pada	Harga
2026-08-08	74,91
2026-08-09	71,56

Minimum price Average price Lowest: 71,56 PLN

Price statistics (90 days)

Lowest71,56 PLN

Highest74,91 PLN

Average73,24 PLN

Median73,24 PLN

Price changes1

Trend−3,35 PLN

09.08.2026 —

08.08.2026 —

Get notified when the price drops below your chosen level.

67,98 PLN

64,40 PLN

60,83 PLN

Date	Harga	Change	Source
09.08.2026	71,56 USD	baseline	Knetbooks.com
08.08.2026	131,95 AUD	baseline	VitalSource

KN Knetbooks.com 71,56 USD Tersedia

VI VitalSource 131,95 AUD Tersedia

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