We are your fellow end users here volunteering tech support, not to support Apple's financial programs. You really need to ask Apple using the "Contact Apple" link at the bottom of the Apple.com home page or, better yet, the contact link on the refurb's store page:

That said, when I looked a few minutes ago, the sales page for a refurb MacBook Pro (see above) did not show a monthly payment option, whereas the sales page for a new MacBook clearly offers that financing:

So the only way to get the official word is to contact Apple. As much as we would like to, none of us can give you an official and/or binding policy answer.