Yep, the stable/basement-shop area of 173 Blackford (Amgine Lanif's home) is intentionally set up to be a shop. Since the new chest logging shows who put in or took out items from the chests and other container objects, running a shop in that way seems a relatively safe operation.
That said, Amgine hasn't been running his glass and crystal shop all that actively of late, since he's often very busy with other things and doesn't spend as much time digging sand as he used to.
I am considering re-opening the shop in the near future, but would like to find a couple characters to be contracted to dig sand and supply coal to help me out a bit. Amgine pays well for such supplies, in case anyone is interested. Though I'll also need to find customers willing to buy glass/crystal regularly again too. It'd make no sense to hire workers if there's no demand that requires a supply, after all.