Well, the 3 with black feathers can't be gold sex links so they are wrong there. It's possible the others are, but they could also be white Leghorns (my guess). The others could be Delawares or columbian Wyandottes depending on leg color and comb.
IF the TSC employees were correct about the breed then they are males. However TSC is also notorious for not knowing what they have so it's possible they are not sex links. Does one have some black primaries?