About 50$1st edition 35$limited edition 10$promo
Promo Meowth (#10)
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.
Promo cards don't have a 1st edition/unlimited edition - but if your GBI Ra has silver text, then it is the first and rarer printing of the card. If it has gold text like an Ultra Rare, that is the second, commoner printing.
No. Stardust Dragon is not found in Stardust Overdrive, and the Promo cards obtainable from the Special Edition pack are Charge of the Light Brigade and Tempest Magician.
Nothing, if that description is correct. A genuine GBI-002 Obelisk the Tormentor should be unlimited edition, video game promo cards never have '1st edition' on them. If you have a copy with that printed on it, then it is a counterfeit.
how
The one in the promo that was first shown on the April 11th edition of RAW Kharma (who preformed in TNA under the ring name of Awesome Kong).
He is in Invasion of Chaos, Dark Revelation 2, and Duelist Pack Kaiba. He is also a promo in The Lost Millenium's special edition pack.
There are 99 unique cards in the Duelist Genesis, plus two Promo cards released with Special Edition packs.
There is no promo for passes.
A lot of people promote on Tumblr. I assume that some one will only promo you if you promo them which is called a promo 4 promo.