Yahoo does not charge for basic customer support, but it does offer a premium support option called "Yahoo Plus Support" which comes with a fee. Here are the details:
Free Support:
Basic help and troubleshooting are available for free through the Yahoo Help Center.
You can find articles, FAQs, and community forums to assist with common issues.
Yahoo Plus Support:
This is a paid service that offers personalized assistance for Yahoo Mail and other Yahoo services.
Subscribers get priority access to customer support agents, as well as help with setting up and troubleshooting Yahoo products.
For more specific details about the cost and benefits of Yahoo Plus Support, you can visit the Yahoo Help Center or the Yahoo Plus Support page directly.