Don't worry about the new fees. They never increase the fees in a short period of time. They will say something like 2 months later, the fees will be ............. In this way, you will never end up a false position.
Get all your forms & documents ready. The last thing you do is issue the demand draft. The day you want to issue the demand draft, visit:
http://www.cic.gc.ca/english/information/fees/fees.asp
http://www.cic.gc.ca/english/information/fees/fees.asp
Whatever you see in that web-page, just issue the demand draft of that amount & send it through FedEx or DHL.