slave cylinder is pretty cheap...around 50 bucks. check out
www.thepartsbin.com for parts-->good prices and free shipping over $50 orders. i get most of my parts from there.
if you kept driving your car like it is now, by forcing it into gear, then you'll probably start grinding your gears (if you haven't done so a little already). continued use like this could really f*#k up your tranny. stop now! take it to a tranny shop.