Unless I am mistaken it appears that Apple has increased the price of iPhone 16 Pro & Pro Max battery replacements compared to the iPhone 15 Pro/Pro Max and 'regular' iPhone 16 models:
From $99 (15 Pro/Pro Max) to $119 (16 Pro/Pro Max) in the US
$135 to $165 in Canada
$169 to $199 in Australia
$195 to $235 in New Zealand
Prices taken from the official Apple Battery Replacement page: https://support.apple.com/iphone/repair/battery-replacement
From $99 (15 Pro/Pro Max) to $119 (16 Pro/Pro Max) in the US
$135 to $165 in Canada
$169 to $199 in Australia
$195 to $235 in New Zealand
Prices taken from the official Apple Battery Replacement page: https://support.apple.com/iphone/repair/battery-replacement