Actually, to have a viable e-commerce site several things have to improve.

Within Malaysia there will indeed be a concern if your package is left behind, will you get it? Worse yet, will it actually be delivered? Pos Malaysia does not have the best reputation here!

This gets worse when talking about international shipping, ...it's very expensive to send goods abroad by Pos Malaysia or any other carrier. There are no special rates for companies using postal services to do/complete their business.

But incomming is even worse! Order something from abroad and 9/10 your parcel has been opened by customs. Depending on the contents it remains to be seen if you will actually receive your order in full or even partially.

But it is not just shipping, also online payments. Why is it it is so difficult for Malaysians to offer Paypal for example it's a big downside! Malaysia is not the must friendly country for e-biz and surely can do more to improve matters.

Apart from starting/running an e-business, I think it would be of value to know what buyers are looking for and wether or not they trust e-sales?

What would be the ideal shop for you?
What service would be a must?