Originally Posted by Harlequin
I'd give it a few months, tops. You can set up payment plans for almost anything. Though, the hero's in that world too, without any indicator of how or when she got there so... We'll just have to wait and find out.
I thought the implication was that he already fully paid off those appliances. There was also a period of time where both Maou and Asiel were job-hunting before Maou finally settled on work at McDonalds.
As for Emi... you'll see that she has her own job and life, so you'll have to draw a conclusion based on that.