except as provided in subparagraph (B). (B) Disputes concerning fees To qualify for the return of a fee claimed to have been paid in error under this paragraph, a person shall submit to the Secretary a written request justifying such return within 180 calendar days after such fee was paid. (b) Fee revenue amounts (1) Fiscal year 2018 For fiscal year 2018, fees under subsection (a)(1) shall be established to generate a total facility fee revenue amount equal to the sum of— (A) the annual base revenue for fiscal year 2018 (as determined under paragraph (3))