Need help fast on yugioh cards?

I have a lot of cards I want to sell and I want to know how rare they are. I have 13 with a shiny background and gold lettering. I have 2 with a shiny background and silver lettering. I also have 3 with just a shiny background. I need help fast as I am putting them on ebay as soon as I find out. If you want to but them include that in you're answer.