>46.18 US
>1000 Yen (about $12US)

Depends on where I go. Lots of stores here still don't take plastic, so it can be anywhere between 2000-10000 RSD (~$26-133... used to be 25-125 but the dollar fell last ten days).

For years in the US, I'd carry plastic only, no cash at all. The only time I'd need it was to pay the parking at the airport, which was spaced in weeks. Or I'd carry around $20 without knowing it - only to discover it after a month or two.