Different shipping options are presented at checkout depending on your store's platform.

For recurring orders rates are applied based on the Dynamic or Retain setting. If you are using Dynamic, the least expensive applicable shipping rate available is applied when the queued order is created. If you are using Retain, the initial rate from checkout is applied for each recurring order unless it is manually adjusted.

Shopify Checkout Integration

If you are on the Shopify Checkout Integration, a single shipping rate is displayed at checkout for subscription orders. In this case, the Shopify API returns the least expensive applicable rate for the order.

If the customer has both a one-time and subscription item in their cart, they can select a shipping option for the one-time product, but subscription displays a single rate.

Recharge Checkout

If you are on the Recharge Checkout on Shopify or BigCommerce, customers can select their preferred rate from the options provided. 

BigCommerce Checkout Integration

Customers can select their preferred shipping option at checkout for stores using the BigCommerce Checkout Integration.