yes, they have copied other airport railways around the world by charging a premium for the airport section. There aren’t enough other trains though, so you could get stuck waiting. I had considered doing this in KL on my recent trip, as the Putrajaya MRT not connects to the Putrajaya Airport station. The MRT are even advertising that you can do this to save some ringgit, but it turns out that if I took the Putrajaya MRT I would still have to faff about getting another train to get to Chinatown.

Oddly there are no overhead racks, while the rest of the North Sumatra trains had overhead racks.

Similar to KL where you can get off and then get on the next train and save a few IDR. Not really worth it when you have to wait around and inconvenient to get the 2nd ticket. Don’t ask how I know for the KL airport train.

No overhead racks for smaller bags?