So these days I try to put my sets together via the purchase of large lots of singles off of Yahoo Auctions, which seem to be getting easier to find (at least for recent stuff). I like it because getting one of the lots in the mail in a Japan Post Smart Letter Pack is sort of like getting a huge wax pack to open. I picked up one 72 card lot of 2016 Series 1 cards which arrived in the mail yesterday and just cracked it open:
Obviously if you buy bags wholesale in quantity you would pay a lot less, but it would still work out to way more than 5 Yen per card. The seller seems to make it up by selling the insert and parrallel cards (gold signature and Wins Leaders) at a premium, but even those don`t seem to sell for too high (250-600 Yen each on the same seller`s listings). Given the amount of work that would go into it I can`t imagine it being a particularly profitable venture, but I do thank them for making these things available to me! I am not quite close to finishing the Series 1 base set this year.