this looks too good to be true
Yep, I see someone else has fallen for the bait.
One look at their gallery tells you all you need to know. Anyone who thinks that there are that number of Japanese escorts available at those low prices is living in cloud cuckoo land. They are all bait to lure you in. I rang one of these agencies (can't remember if it was this particular one or one of the almost identical clones) and when advised that none of my choices were available, I asked who they did have available. Out of the dozens and dozens shown in their gallery, there were just two actually available. The chances that they could rustle up even a threesome, let alone a five or six, must be negligible.