Gups Who Extend Membership Multiple Years At Gup Rate And Become Dans

Q: Looking over the membership drive paperwork I see that there is an option for up to 5 years of pre-paid membership. 

For a student who is a green or red belt it is conceivable that they will test for Dan in less than 5 years.

Does this affect their pricing or would they just pay the Gup level and lock in that rate for five years regardless of their rank?

A: The gup student's membership is locked in at the rate they extended for multiple years even if their rank changes during their extended membership term.