And here's a little tid bit for everyone, most of your major seed companies farm out the actual seed production to the same places that supply the little companies like Linda. Search Northern Lights Auto on any seedbank and I'll bet at minimum 60% all came from the same stock. So some times you get what you pay for, and sometimes you don't!
I suspected something like this, too.
Seed Stockers is at least a bit more clear about this, the DP connection and description of the seed producers.
And if you look at the bulk / cheap seed sources, you can usually track down the "branded" breeder behind the strain.
I figure that the branded breeders would have a fair idea of how many seeds of a given strain they'd sell in a year.
But think of actually producing the seeds -- even a smaller flowering room filled with clones of the mother,
hit that with a big cloned pollen donor or two, and the number of seeds is going to be huge.
Just add another small room, the cost is not much, but the number of seeds to sell is now doubled.
But demand for the branded strains is going to stay about the same.
What to do? Sell it under another name at 1/2, 1/4, 1/10th the price.