I frequent systems where tcsh, for historical reasons, is the default shell, and for all its faults it does have some nice pushd settings that make directory browsing with 'cd +<number>' and 'dirs' very convenient.

I have ported this functionality to Bash: http://thrysoee.dk/pushd/

OK a little contrived, I know. But if you normally prefer to pay in Japanese Yen you would save $31.16 by instead paying in Brazilian real.

Mostly I was just surprised how much the effective price varies by currency.