need help

i have just found my sons pokemon collection from years ago he wants me to sell it but i really know very little i know there are some very good cards in it like ancient mew holo japanese holos etc can anyone help me if i send a list of the cards and tell me how much i can sell them for as long as i get a fair price im not bothered if u can make some money on them yourself as i know these kind of collections take a lot of time and effort i would just like a quick fair sale

Yes just make a list here telling the card name and condition.