"My, that does sound quite fantastical," he hummed, rather amused by the man's speculations. Of course, Church was on the nose, but the Medicine Seller was nothing if not an aggravating pedant. Especially when any of his weird magical stuff was called out for being exactly what it was.

"But as you can see, it is a box. Not a bag at all."

He even tilted it a bit so Church could get a look in the top compartment which... just appeared to be very tightly packed and not at all some infinite void of stuff.