Also I see you state, "All Unlimited, First Edition and Reverse Holo cards correspond with English sets." In French there only was a first edition shadowed and unlimited printing (but the 102 Pokmon line up is still the same), correct
However, despite the small set size, there are plenty of cards that are very valuable and will cost a pretty penny if you want to obtain the fanciest versions available for the cards
While Pokmon successfully turned Bug-type into its own element largely by syncretizing with the Three Worms of Taoism and expanding its "vermin" status, thus inspired others to do to so, Bug-type is still pretty much the worst type in the game
You're probably losing money from the percentage eBay collects
While many of the top chase cards from this set are valuable, they are a far cry from the kind of insane prices we saw in Prismatic Evolutions, and could signal a general cooling in the Pokemon TCG market
Xyz summon Zoodiac Daigusto Emeral using Zoodiac Thoroughblade and Zoodiac Ratpier as Xyz Materials