Ignition Problems

Hey guys. I am in dire need of help

My key will not go into my ignition what so ever and IF it does it wont come out. Im assuming the tumblers are screwed up in it and im already prepared to replace it I am just wondering how much work its going to be when I do it myself. Its a 2000 Toyota Solara v6 5Spd so it is in the dash. I am also wondering if anyone knows ROUGHLY how much this will run me in Canadian dollars?

Thanks ahead of time!