How Much are my Pokemon Cards Worth? Please help!?

I found a bunch of Pokemon cards but the ones I'm most curious about are two Pocket Masters cards. They are in Japanese and are of Phanpy and Sentret. They are holographic. I've looked online every where and can't find them. I also have a Japanese pokemon card of Mew that has a pokeball on the back and kind of a maze type thing but it's not a real maze and it is also holographic. Any help is awesome thanks! I also have a bunch of shiny regular pokemon cards.