i would suggest checking eBay and other websites to see what prices are being offered there.
To get an idea look up the cards you have on Ebay and watch a few on auction until they end, then you will see what they go for. Some are valuable, some are not.
Depends On The Card's.
they're supposed to be 20c each
yes you should then when your older sell all your cards for twice as much money as you payed
It depends what the Pokemon cards are.
U SHOULD SPEND NOT SO MUCH AND LOOK LIKE A POKEMON FREAK BUT SPEND JUST ENOUGH SO THAT IF SOMEONE TALKS 2 MUCH, JUST SHOVE IT IN THEIR MOUTHS
$15-$20 at the most.
About 6,000 English cards
ten cards
Depends on which cards. :)
5-9 Pokemon cards and 9 dollars
Energy cards are usually included in almost every pack you get (at least the ones I get. That's a lot of packs!), so you shouldn't worry about getting energy cards as much as you should about where to get packs of Pokemon cards in general.
Depends what cards you have.
Approximately 1000 dollars per deck