Look, I get how this works, I've seen enough amazing sets with and without international ISO support. This is an enthusiasts market and without being more involved, you won't get the set you're after.
Of course it's not the end of the world as there's still the ISO enter but my OCD in me will get the better of me......eventually. The only exception I will make is with GMK Jags which is an insane set (in my personal opinion). That being said - GLWIC > GB