system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does a graphing calculator with a 4 inch gray scale screen cost more than a quad core tablet with 1080p screen?
gpt
Schools often mandate specific calculators for specific classes.   This is for two reasons. One is that instructions can be very exact: hit this button then that button then enter these numbers and get a result. Also it's to prevent cheating that you could do on a general purpose computer. 

So since students have to buy these calculators, just like text books they have a smaller market than general computers (costs are spread over a smaller market), and since buyers are forced to buy them, they can set a higher price and margin.