04 honda civic lx with 200k miles?

Is it a good buy?

It depends on how much you have to pay for it… It is a 15 year old car this year… If it is in deceit shape and is $500 or less that might be ok… If you have to pay more forget it! A 15 year old car is due to have to replace many parts… Starter, altinater, brakes, fan belt, fuel pump, spark plugs and wires and more! It could be a money pit!

Go on cars.com and look at cars that are the same make, model and year.

Depends on reliability, unless have money for maintenance.

Not really, at 200K mi a Honda is ending its useful life span. It is the kind of car if it is cheap you drive it until it needs repairs then junk it, or sell it cheap.

If it has been maintained and had the cam celt changed, it will be fine

From my point of view, it's not. Even taking into consideration that Hondas are exteremely reliable and keep their resale value perfectly, it's not a great deal.