Hi,

To manage different prices for different companies, create price lists for each company (Kenya and India). While creating each price list, select the specific company it applies to. You can also use formulas within the price lists to calculate sales prices for each product. When making a sale in one company, use that company's designated price list, and similarly, use the other price list for the other company.

For more details, refer to:

How to Set Multiple Prices Per Product and Discounts in Odoo 17 Sales

Hope it helps

I looked up and confirmed the issue in the Odoo 18 demo.

Created a new company, and set the currency as INR (company account settings to "India").
When creating a product, it shows the Sales price in USD and cost in INR. 
Not sure if it is caused by prior configurations (initial company currency when the DB was set)