Coming to or remaining in Canada without approval of rehabilitation
If you need to come to Canada but cannot apply for rehabilitation because five (5) years have not passed since the end of the sentence imposed or you are not eligible to apply for a record suspension (formerly a pardon) for convictions in Canada, you may request special permission to enter or remain in Canada. To do this, complete the Application for Criminal Rehabilitation (IMM 1444) and make sure you check the box that states “For Information Only”. Attach the documents outlined in the Document Checklist.
Note: There will be processing fees for applications for special permission to come into or remain in Canada. You will be advised of the processing fees at the time, or you can refer to our website for further details.
http://www.cic.gc.ca/english/information/applications/guides/5312ETOC.asp#5312E5
That's why I said that at least to be on the safe side , I would just send $100 or $200 and then just wait for CIC to ask you for more money , or to send you a refund !