I believe this is the case. I asked about Esoterica when I visited the shop, and they said all of it goes to internet customers. They had many blends of Samuel Gawith on the shelf - I picked up a box of St. James.
Speaking as a relative newb who hasn't tried either blend, I would never pay anywhere near that.
I've managed to purchase quite a bit of other Esoterica blends online, and I'll just be patient and hope I eventually find these.
If not, there are plenty of other great tobaccos.