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See http://www.webshaper.com.my/compare-payment-gatewa... for a nice listing.

Recently just researched the available options. To add, WorldPay stop supporting Malaysia merchants. iPay88 and MOLPay, passed down supposedly fine to their users, RM900. To use them that's > RM1800 just to start, and a considerable high yearly fee for a lot of ecommerce. I believe they also charge rather high fine for chargeback. They don't support other currencies, not really an option if you are targeting global market. Most only have PayPal to work with. This has not changed much after so many years.