[em-bee]

it depends on how you use them. for my kids which are not as careful, i get more mileage out of a used laptop, because they would break a new one just as fast as a used one. (current x270 which i got used for $150 lasted about 2 years. a new one would have cost 2-3 times as much but in the hands of the kids it would not have lasted 2-3 times as long)

buying used hardware is also hit or miss. i got another used laptop for $250 which is decent, but it has some strange hardware issues that i can't pinpoint. unfortunately the choices for used hardware are limited and i could not find any comparable devices in the same price range. (any alternatives would have cost more than twice as much)

so generally, when i can afford it, i do the same as you. get something new with a good price/performance ratio and use that as long as i can.