laptop screen cracked

Hello... I have a Lenovo G780 and its screen shattered internally somehow (no cracks on the outside and no laptop freefalls or anything like that) so I was wondering, should I get those screen replacements from eBay? Are they worth it? There are only a couple of reasonable priced ones, some are...

I was wondering if you guys could tell me if the laptop I am planning to buy is future proof. Its an ASUS ROG GL552vx. Here are the specs Intel i7-6700HQ 1x8gb ddr4 ram Nvidia GTX950M GPU 4GB gddr5 1TB HDD SSD slot available. I want the laptop to atleast last for 3-4 years. If not, then any...