Commercial products are immediately purchasable using the payment method associated with your HERE account. Typically, these are products with standard billing options, such as "1,000 API calls per month".
Select a product in the Store and click Show details.
Review the product's description and the attached Terms and Conditions. Accept the Terms and Conditions, and then click Add to cart to make a purchase.
The product you selected is placed in the shopping cart and you can continue shopping or proceed to checkout.