PayPal Checkout (includes a potential Installment plan option):

You may be able to make smaller payments in interest free installments by applying to use Pay Later with PayPal through the PayPal checkout. You can also use credit cards and other options through PayPal (you don't necessarily need an account to use a credit card for checkout). Be sure to pick the correct fee on the top dropdown box.

Select the correct fee in the dropdown menu below then click on the relevant button, ex: apply for installments with Pay Later: