Youll enjoy the Booster Box WAY more if you know you can afford it and you didnt take food off the table to do so
GX episode 12: "Formula for Success"
Top grading companies even recommend them in their submission guidelines
You can always sell to regain some money if you arent happy with your purchases but its a lot more simple to give it a bit time and study the topic first, these arent any one time opportunities after all that you miss if you arent buying now, its at least here a somewhat common saying that with set cards theres always another copy to buy
At the start of your Main Phase 1: Add 1 monster with 0 ATK from your Deck to your hand, and if you do, halve your LP, also you cannot activate the effects of cards with the same name as the added card until the end of the next turn after this card resolves or until you Normal Summon a monster with that name
C Common Terra the Terrible X DARK Level 4 [ FiendNormal ] ATK 1200 DEF 1300 Known as a swamp dweller, this creature is a minion of the dark forces