How do I intergrate ISBN book search #'s, cost of book ect.. into wordpress

I am trying to build a website simular to something like https://ckybooks.com/ to buy and sell books. I read somewhere there is a plugin available that you can integrate into WP. Also how could I intregrate music cd’s, movies and games to search by a number like the bar code or something? Would I have to edit the price for every item for how much I am willing to sell or buy them for? Sounds complicated because there are probuly like millions of books, games, movies and such. Any help is appricated, thanks!