system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How come things like washing machines and cars always stay at high prices, meanwhile things like radios and TVs get cheaper and cheaper?

Never understood why washing machines , cars and cookers always stay expensive whilst other things get cheaper as they get easier to make?
gpt
Cost of things are proportional to the cost of their base materials. Things like electronics become cheaper because they are used in technology that allows you to make NEW technology (like whats used in electronics) faster, smaller and cheaper. 

So, the reason why a washing machine or car raises price with inflation is because the raw materials like steel, aluminum, and plastic are also rising in price with inflation and supply and demand. But, you cant develop new technology to "make" more steel or plastic faster, cheaper or smaller, you have to acquire it the old fashioned way.