Japanese cards have a more niche (but growing) demand outside Japan
(1) During your Main Phase: You can excavate the top cards of your Deck equal to the number of other Valkyrie monsters you control, and if you do, add 1 excavated Normal Spell/Trap to your hand, also send the remaining cards to the GY
Every box is serial-tracked if a box is ever found to be searched or resealed, we trace it back to the source and permanently ban that supplier
You cannot Special Summon monsters from the Extra Deck, except DARK Dragon Synchro Monsters, the turn you activate either of this card's effects
I wont be home until June, but then I can update with some info, as I purchased a few large lots of dollar packs, and I think some came in original box (possibly sealed)