Most of those are Blattid nymphs, probably B.orientalis. However the nymph in the first pic on the far left is a Parcoblatta. You can tell because the last abdominal segment ends in a single point rather than being cleft.
Huge difference in supply and demand here in the states, keepers have struggled to produce this species as consistently as those abroad have due to any number of reasons. So the price remains very high here because the supply is far less than the demand.
Also I would argue that the EU hobby had...