# Step 4: Configure the pricing model
<a name="set-pricing-model"></a>

 When configuring your product's pricing model, you can offer your product for free or implement usage-based pricing. Your pricing model cannot be changed after you've published the product. 

1.  Choose a pricing model. Batch transform and algorithm training products can only be free or charged for hourly usage. 
   +  If you chose to offer your product for free, choose **Next** and continue the wizard. 
   +  If you chose usage pricing, continue these steps. 

1.  If you chose to charge based on usage, you can enter usage costs. You can choose to enter a price that applies to all instance types or enter a price per instance type for more granular pricing. 

1.  Select **Yes, offer a free trial** if you'd like to offer a free trial of your product. 

1. Choose **Next** to move to the next step in the wizard.