ETS官网给的是：Score Reinstatement — Fee US$30|
Scores canceled by you can be reinstated if your request is received at ETS within 60 days after your test date. You may fax or mail a completed Score Reinstatement Form (PDF) with payment to ETS. In addition to providing your name, date of birth and daytime phone number, you will need your test date and registration number to complete the form.
Also, you can designate up to four free score recipients on the form. Include the appropriate department codes (PDF) and indicate what scores you want sent. With the ScoreSelect option, you can select to send scores from your most recent or all administrations from the last five years for each of your four free score reports. Scores for a test administration must be reported in their entirety. Regardless of whether you choose the Most Recent or All option, you will select specific test administration dates so your scores are all from the same testing session. If you do not select score recipients, you will have to pay US$27 per recipient to have scores sent at a later date.
Scores will be reinstated and reported approximately two weeks after your request for the computer-delivered test or on the approximate score report mailing date for the paper-delivered test. Your scores will be mailed to you and your designated score recipients shortly thereafter.（http://www.ets.org/gre/revised_general/test_day/policies/）