Just shop on ShopRabbitHole.com and check out as usual. At checkout, select "Installments by Afterpay" as your payment method. Do not enter in your card information.
After completing checkout, you will be directed to the Afterpay website to register and provide payment details (Visa or Mastercard). If you’ve used Afterpay before, just log in to your Afterpay account.
Please note, all items in your cart must be eligible for Afterpay, and the cart value must be between $35 and $1000.