I have discovered that the majority of quails here are used for pet food - particularly cat food. It seems the locals are only really interested in the eggs. My supermarket stopped stocking them about 5 years ago.
That does mean, though, that quails are dirt cheap online. If I buy 20 quick frozen oven ready birds (intended for human consumption), they work out at 86 cents USD each. Buy only 10 and that rises to $1.28. Must check my freezer space.