Googled the trackpad problem and found the SIMPLE solution.
20 - 50 minutos
Cheaper than a new one!
Easy as pie. I have been working in the television / computer industry for over 30 years so might seem easier than it would be to a first timer.
BUY THE Pro Tech Tool Kit (wish it was US made!) - and apply pressure adequate pressure to the screws to prevent stripping the heads. Get some good glasses too! Use glass bowls or small cups to keep screws organized. GO SLOW and follow the great ifixit directions!