Where can you park in Montreal for a weekend and not get screwed?

I have been visiting my friend on the corner of st. joseph ouest and st. urbain. So far, I have been parking in a garage on rue hutchinson---Unfortunately, they have been charging me 33 dollars to have it there for a day and a half on the weekend. I can't really afford to keep paying this much. Is there an extremely cheap way to park in montreal on the weekends (perhaps taking the metro to st. joseph?)? or is parking outside of the city and busing in a better option? I just need to cut down my costs because this is getting ridiculous.