"Wie bewaart die heeft wat"

(can't translate that properly).
Nice, most with boxes. Don't get the second hand pricing on G&W though. That Snoopy, if it looks nice, you can probably sell for 200 euro! Rough estimate on the whole box: 1200 euro.
Game-wise, DK Jr, DK, DK II and Mario Bros are a few of the nice exceptions to boredom, hence they are so widely available, yet most G&W do ridicule prices compared to all other hand held brands. There is 50% Nintendo-brand tax on them at least.