Sometimes, certain Japanese cards end up cheaper simply because big runs in Japan overflow the local market
As a result it can simply power through many decks

Decklists are not card-for-card product displays but instead interactive lists of the cards included in each deck.) White Savannah Lions 2 Alpine Watchdog Linden, the Steadfast Queen Search Party Captain Mighty Leap Territorial Hammerskull Banishing Light Odric, Lunarch Marshal Aerial Responder Valorous Stance Search Party Captain Canyon Jerboa Serra Angel Mesa Unicorn Silverbeak Griffin Pacifism 13 Plains Planeswalker Stamp Reprints Blue Cloudkin Seer Vedalken Mesmerist Academy Journeymage Chart a Course Chilling Trap Frost Trickster Cyclone Summoner Metropolis Sprite Gadwick, the Wizened Archaeomancer Serpentine Ambush Vedalken Mesmerist 2 Charmed Sleep Tetsuko Umezawa, Fugitive Quicksilver Fisher Geistwave 13 Island Planeswalker Stamp Reprints Black 2 Cursed Minotaur 2 Grasping Scoundrel Crooked Custodian Reave Soul Vampire Nighthawk Final Reward Bogstomper Demonic Gifts Disciple of Bolas Vraan, Executioner Thane Pharikas Libation [1F7W8lqrgVwrLVsppxporS] Bone Picker Inkrise Infiltrator Rise Again Dreadwurm 13 Swamp Planeswalker Stamp Reprints Red Chandra's Magmutt [3fFaBfuh0GXYFfFiEV6vEV] 2 Scorch Spitter Kolaghan Warmonger Mugging Voldaren Duelist Dragon Whelp Antagonize Lava Coil Demanding Dragon 2 Goblin Trailblazer Flame Spill Onakke Ogre Volcanic Dragon Subira, Tulzidi Caravanner Dragon Mantle 13 Mountain Planeswalker Stamp Reprints Green Goreclaw, Terror of Qal Sisma Druid of the Cowl Canopy Baloth Wildwood Patrol Clear Shot Dawnhart Rejuvenator Sentinel Spider Giant Growth Colossal Dreadmaw Treeshaker Chimera Druid of the Cowl Crushing Canopy Leatherback Baloth Overcome 2 Snapping Gnarlid Iridescent Blademaster 13 Forest Planeswalker Stamp Reprints

I bet they've been put through the ringer.) McDonald's is bravely carrying forward with a second wave of Pokemon Happy Sets between August 15 and August 17
After all, the more things that can go wrong, the less often things will go exactly right
The site also supports trading, so you can either trade a card directly (if the other player is online the same time as you) or via a public trade (where you state the card you're offering and the card you want in return, then wait for someone to take the bait)