Goes to show a lot of rich kid here. I drink ah cheong coffee only. Less than RM 3.

Aik Cheong coffee is different. That's "chemical coffee" with enhanced flavor.
Starbucks gives you espresso shots, which is very different coffee extraction method.
Pure 16g of crushed coffee bean amounting only 8ml of coffee.  Hence, the price difference.

You can't get espresso shots easily unless you have a proper machine home costing probably RM2k onward.