That is extremely inexpensive. Until a couple years ago, people in Beijing would only pay 2 RMB ($0.3) flat fee to ride on all its 500+ km metro system. Now they have to pay based on the distance of their ride. I think it is capped at RMB 10?
Any Chinese member from Beijing here?
@beijingwalker
Yes, it is indeed very cheap, especially when compared with the subway system in Saigon. The train looks like old design, color scheme was awful, nevertheless it gives you biggest bang for your money. The most important thing is, it will be the first to put in service.
But again, some Vietnamese members here may not care at all if some foreign contractors charge them more than double of original budgets and delay the projects by years, as long as they are not Chinese, be them Japanese, Korean, Spanish, or French.