もし、コモンローを却下された場合、申請料は返金してもらえるのでしょうか？

申請料は審査をしてもらうための手数料なので戻って来るわけありません。 　

申請料は結果の良しあしに限らず返ってこないって、書いてなかったでしたっけ。
これはコモンローに限らず全部だと思うんですが。 　

Are fees refundable?

Processing fees

Processing fees are fully refundable only if, before an officer starts assessing your eligibility to sponsor, you notify CPC-M in writing not to assess your sponsorship application. Processing fees are partially refundable if CPC-M determines you are ineligible to sponsor and you have notified CPC-M not to process the application for permanent residence of the person you want to sponsor (see What if I do not meet sponsorship requirements?). The amount refunded will be equal to the amount you have paid less $75. Once processing has started on the permanent residence application by the visa office, you will not be entitled to any refund of the processing fees.

After reading this guide, you should be able to decide whether you are eligible to sponsor a member of the family class and what information and documentation is required for the application to be approved. Make sure that you are eligible before you pay your fees and that you provide all the information requested before you send the applications to CPC-M for processing.

Right of Permanent Residence Fee

If you have paid the Right of Permanent Residence Fee, it will be refunded to you if the application for permanent residence of the person you want to sponsor is refused (by the processing centre, visa office, Appeals, or upon receipt of a written request to withdraw) or if the person you are sponsoring is not granted permanent resident status. If you are entitled to a refund, you should receive it four to six weeks after the refund request has been processed by CPC-M.

http://www.cic.gc.ca/english/information/applications/guides/3900E8.asp 　

こういうものの考え方する人って本当にいるんだね。申請料金なのに、却下された(審査を経て出された結果が自分の意に沿わないから)という理由で返金とは・・・

返金されたら嬉しいですけど、残念な結果だとしても一応審査が入っていて、そのために人が動いているんですからもちろんお金がかかりますよ。