What are my Cards Worth?

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. I have a lot of Dark Pokemon cards and a bunch of shiny cards. If you could let me know which ones are rare and how much they sell for that would be awesome. Thanks!
Shiny cards:
Eloctrode
Dark Vileplume
Muk
Snorlax
Clefairy
Venusaur
Dark Gyarados
Zapados
Hitmonchan
Raichu
Kabutops
Vaporeon
Alakazam
Polywrath
Aerodactyl
Jolteon

Dark Cards:
Flareon
Kadabra
Joleton
Blastoise
Golduck
Dragonite
Dragonair

Then I also have a Mewtew card.

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You should ask there. This forum is dead. :3