unless you trust the seller 100% i would NOT pay more then regular motoro money for these rays.
they arnt worth marble money untill they look like marbles, or you trust the breeder.
they are to small to look like anything other then regular motoro at the moment.
DO NOT trust the 100% money back promise, anything can happan between now and the time they become adults. excusses will come that they need to be atleast 18 months old to see the marbling ect ect. saying he will give you your money back means nothing.