depends on which ones you have...
about $60
Anywhere from 1$ to 1000$
A Spanish 1st edition Machamp Pokemon card is worth around $20.
The worth of an Italian 1st edition Machamp Pokemon card will be determined by things such as condition and supply and demand.They average about $3 in mint condition.
The limited edition Pokemon cards that are a part of the first generation total to 151. If there is a first edition mark it is very valuable, and diamond cards are also very uncommon and valuable.
It depends on what the card is, that's more important. Many 1st ed cards will be worthless because the card itself is overprinted, underpowered, etc. Tournament quality cards will be worth something, be they 1st ed or not.
1st edition cards will simply state '1st Edition' at the bottom left, just below the picture. Unlimited edition cards will not have anything there. Mostly only cards from regular booster pack sets, or Duelist packs are differentiated into 1st edition and unlimited. Promotional cards and reprint sets (such as Dark Revelation) never have 1st edition versions, even if that card was in the first print run.
If a card is 1st edition, it will say so, it will have '1st edition' written on it. The concept of 1st edition only applies for cards in booster sets, including Duelist Packs though - promo cards never have '1st edition' even if they were the first printing of that card.
Rarity and usefulness are completely unrelated.
Shadowless cards cannot be 1st edition, therefore it is a fake, sorry
On the left of the part of the card that lists the pokemon's weight/height/type (which is usually right below the picture), first edition cards have a symbol that says "Edition 1" with the 1 in a circle. Hope that helps. :)
The cards have 1st edition written on the left hand corner under the picture. The name is different colors. The picture is foil. It might say limited edition(there is no rarer version for limited edition cards).