How to buy a stepn shoe?

Could you please explain the process of purchasing a StepN shoe? I'm particularly interested in understanding the steps involved, from choosing the right shoe model to completing the transaction. Could you also elaborate on any specific requirements or considerations that need to be taken into account while making this purchase? Additionally, I'm wondering if there are any special promotions or discounts available for first-time buyers. Finally, I'd like to know about the payment options and whether there are any associated fees that I should be aware of. Thank you for your assistance in clarifying this process for me.