I've replaced screens on a couple of laptops in the past, definitely cheaper than replacing the whole laptop and fairly painless. Some google fu should give some vids/instructions on how to get the cover off of your type of laptop, revealing the model number of your screen. (tbh a google search would probably give you this too) Bung that number into google shopping, ebay, etc to get an idea of price.
Cheers, looks like £85 including VAT and postage.
Just a small voice at the back of my mind saying "never invest in obsolete technology".
This voice is probably being goaded by the "buy a new toy" part of my brain.