macbook pro out of warranty, two keys not working in built in keyboard. Options?
Your two options are roughly;


You can still take it into the Apple Store, and they can repair it. Obviously, for a cost. Your question notes that you appear to need a whole new keyboard tray, as it's not just a key dead at the surface-level. I don't know how much this would cost, you could perhaps call ahead to save you a trip and essentially just get an expected quote.
Fix it yourself. I love iFixIt for this purpose, start at their MacBook Pro parts page, pick your MacBook Pro's size/model, and check the price for the "upper case" part. I can't imagine that specific key death could be anything other than the keyboard tray and particular circuit boards attached to it.