Price manipulation still happens with Japanese cards, and especially from American sellers on Ebay or Mercari, but its significantly harder to do for a few distinct reasons
The cards going out are just as important as those going in
I also want to point out that theres a treatment which isnt on this list: EA versions of the original art for the 8 face commanders, which can only be opened in the bundles that comes with two legendary EA cards, and the Collector Booster Sample packs
Now, if you look at my post on Base Set, I pointed out that the French commons, uncommons and Basic Energies sheets differ from the English ones but the German rares sheet does not, and stated that the use of striped collation may have been the reason
Modify current Structure Decks or add them to Starter Decks for your own take on the GX theme
If that werent good enough, Edward Kenway can even provide card advantage, but youll need vehicles for this