This is the cheapest localisation you can do. If your customers speak Hindi, Arabic or French, rename every entry into their language — nothing else about the panel has to change.
If you sell only by conversation and do not want customers browsing prices on their own, switch the Plans entry off. Your Buy-now URLs still work if you share them directly.
Both are on by default. Turning an entry off here removes it from the menu and makes the page unreachable on your panel.
Do not switch off Account. It is where customers change their own password and manage devices — without it, every password change becomes a support request to you.