Why are used cars often still almost the same price as buying one new?

Just been looking at used car websites online, and the prices don’t make sense to me.

If a car is 850,000 TWD new, I’m frequently seeing 3-5 year old versions of that car with 30,000 - 40,000 miles on them with asking prices of around 700 - 750,000 TWD.

Why would anyone still buy a used car in that scenario when buying new doesn’t cost that much more? I don’t understand why the depreciation is so slow. I’m looking at cars that are actually made in Taiwan too, not those that have been imported.

Can you provide a few examples? Note that a new car advertised at 850K will cost quite a bit more to get on the road and a used car asking 700 to 750K will have a negotiable cream built in.