Comment by Marsymars

> I've had difficulties finding the right place to get a SUICA card

It's not that hard unless you fly into somewhere other than Narita/Haneda where Welcome Suica cards are readily available. They're not available to Japanese residents, their only purpose is to function for tourists, so they're made to be easy for tourists.

> And you can charge it only by 500 or 1000 yen at the time (depending on the machine), and of course tickets always have not round prices like 110 yen.

Whatever I have leftover I spend at Starbucks at the airport on my way out. They'll happily split your purchase up so you can drain your Suica card balance and pay the remainder on credit.