The technical data on laptop screens is not publicly available. Without this information it is very difficult to determine the compatibility of different LCD models with different laptops. Notebook manufacturers are trying hard to not disclose this information. This allows them to display any favorable to them price, therefore nobody really knows what they are selling, and as a result there isn’t any competition.
In addition, a few years ago, LCD screens were really expensive because of the cost of the manufacturing.
Back then paying $800 for the MacBook screen was considered a bit expensive, but at the same time acceptable.
We sold such screens at $600 including installation.
Today everything is different – the price of LCD production fell drastically. Information on compatibility is no longer a secret. This led to a greater availability of screens, but strangely enough, the laptop manufacturers did not wish to lower their prices in the pursuit of high profits.