I arrive in Kuala Lumpur's KLIA2 airport and depart several hours later from the main KLIA. The train between the airports is RM2, which seems likely to be far below the minimum withdrawal from an ATM there. What's the cheapest way to buy the ticket? I have a US MasterCard and a few Singapore dollars in cash (too little to exchange for ringgit at the FX counters in Singapore airport).
(If it's not clear what I mean by "cheapest", since the ticket is RM2 no matter what, I'd prefer spending my leftover Singapore dollars over spending exactly RM2 using my debit card, over withdrawing more money from an ATM and spending RM2 from that.)