I often send Square invoices via email for people to pay their nexus letter with a credit card, but if you ever want to try to use PayPal’s “pay later” interest free installment plans those may be available to you as well.
I have a checkout here and you can select “pay later” under the $600 section for a nexus letter based on a records review.
Here is the link: http://www.toddfinnerty.com/payabill.html
I know during the holiday season you may prefer to try to pay over time without interest.