Asking lower than what I paid?

Hi I am new to this forum and I am experiencing some weird things. For example I bought an auctioned domain with appraisal $4500 GoDaddy, $40000 at estibot and $55000 at saw and I paid $270 as a won bid. And I am willing to sell it of course higher. And people here say $50-100 to buy. Is this normal here? Or just they're kidding ?