The premium varies by card and grade, but as a rough guide: Typical graded vs
I won 2-0 without a lot to tell afterwards
You only control the player
They often offer two ready-to-play decks that contain a fixed list of cards, along with the basic rules and potentially some other accessories, making it easy for newcomers to simply pick up the starter set and play
Simultaneously, the only other card that allows you to staple a foretell effect onto another card is Ethereal Valkyrie, whos effect only occurs when it enters the battlefield and attacks, which though rather impressive, given that you can play cards with higher CMCs for cheaper on later turns should you be stuck on mana, also leaves you open to the possibility that you could just whiff with a land, and have to shamefully Foretell a basic Island the turn after
Combined, its a cant miss, all-foil Summer Dueling blockbuster