600 eth for a digital tomagochi is crazy, but if you are into this kind of things and have more eth than you can spend in a lifetime, why not?
besides the kitty is rumoured to be very cute
cryptokitties are the pioneers in this business, now the sites like that are popping like mushrooms after a rain
so maybe an early horse or a hedghog bought for a tenner could make you a fortune later on,who knows
if you cannot afford to buy a 10$ digital cat, then maybe rethink your earning schemes
but for some it is the soup thats too weak , for some its the diamonds that are too small - if there are people buying pieces of code with a cat picture for 600 eth
means it is worth 600 eth at that point in time and that someone is willing to pay that much for it
this is the usual misconception about "oh it cannot be worth that much" same as cryptocoins prices and many other things
always the supply/demand model:if it is sold or bought at 6400$ now, means that it is worth exactly that today
it may cost 5.000$ or 100.000$ tomorrow or in a year's time but only if there are byers willing to buy it