This is from Wizard's official amazon store, so this is the price they are setting.

https://www.amazon.com/Magic-Gathering-Masters-Booster-Toppers/dp/B088WM7MZF/

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EDIT: I could be wrong on this, do not take it as fact, apparently wizards might not manage the store and Amazon could, since we don't get an MSRP, this could be the price at your LGS as well...