A single Special Mini Edition pack holds three cards, while the Classic Cards listing asks less for a pack of eight, so the pack with fewer cards in it costs more. The same Special Mini Edition also comes as a box of 36 packs, three cards each, which works out far cheaper per pack than buying them one at a time. If you are buying for one child who wants something to open, the eight-card Classic pack gives them more cards for less money.
What the titles leave out matters more than the prices. The Classic Edition Series 1-B Foil, the Classic Edition Series 1-A Blister, the Energy Edition and the second Special Mini Edition listing never say how many cards or packs you get, so check the count on the seller's page. Of all the titles, only the 1-A Blister and the 1-B Foil give an age (8+). Every listing here is Kayou, so you are choosing between editions, not between makers.