Is your feature request related to a problem? Please describe.

The current floating calculator can sometimes obscure important information on the product page and may not always be needed by contributors or users.

Describe the solution you'd like

• Add a sticky "Go Up" button on the product page that remains visible as users scroll, to help them quickly return to the top.
• Make the floating calculator optional through a user setting or toggle. Users who do not need it can turn it off.

Describe alternatives you've considered

• Hiding the floating calculator entirely, but some users may still want quick access to it.
• Moving the calculator to a less obtrusive part of the UI, but a sticky "Go Up" button serves a broader navigation purpose.

Additional context

This will improve navigation on long product pages and allow users to customize their workflow, especially for contributors focused on bulk additions or edits.