Like most One Piece TCG cards, the value of Shanks depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Starter Deck 5: Film Edition)
Move damage counters on to an SP Pokemon on your bench and just Poke Turn the damage away
As the novelty wears off, were seeing a slow but steady price retreat
The thing is that Reckoner at least does something different and new while Chained to the Rocks is just a cheaper Journey to Nowhere
Exclusive SAR cards : Hilda, Keldeo, Bouffalant
Either of the new decks work as an excellent starting point for newcomers, and while the emphasis is on beginners, there are plenty of solid cards included that even veterans may want to scoop them up