These cards are identifiable by the Lv.X following the Pokmons name on the TCG card in the top left corner
Each forum has its advantages and drawbacks, so research them to find what works best for you (for example, eBay has the widest reach, is easy to use, and is trusted by buyers, but it also takes a 10% commission from your sale)
To assist you in establishing a price, look at the averages for comparable cards sold on the site Card Market
Hexproof scales with strength and so on a 1/1 it is near worthless but make that a 2/2 unblockable and it is rather more significant
Company: Konami Item Type: Booster Box Series: Code of the Duelist Brand: YuGiOh Release Date: August 4, 2017 UPC: 083717833598 Stock #: 156819 Our Guarantees to You, Our Valued Customer
Fun Ranking: Fun Finneas, Ace Archer, Another Rabbit and token matters commander