no training that is suitable for the worker is available at a reasonable cost, or no training funds are available. (D) Nearing retirement The worker is within 3 years of the age of retirement. (2) Duration of waivers (A) In general Except as provided in paragraph (1)(B), a waiver issued under paragraph (1) shall be effective for not more than 6 months after the date on which the waiver is issued, unless the Commission determines otherwise. (B) Revocation The Commission shall revoke a waiver issued under paragraph (1) if the Commission determines that the basis of a waiver is no longer applicable to the worker and shall notify the worker in writing of the revocation. 202. Weekly amounts (a) In general Subject to subsections (b), (c), and (d), the readjustment allowance payable to an adversely affected worker for a week of unemployment shall be an amount equal to the most recent weekly benefit amount of the unemployment insurance payable to the worker for a week of total unemployment preceding the worker’s first exhaustion of unemployment insurance (as determined for purposes of section 201(a)(3)(B)) reduced (but not below zero) by— (1) any training allowance deductible under subsection (c)