When shopping at Marcs, it's helpful to remember: this is the chain that sold human heads a few years back. No, not on purpose. Some smuggler hid remains (possibly ancient and valuable) inside ceramic head statues. Seriously, this happened. So, I guess Marcs gets whatever washes up on the beach, and one day it was human heads. Or maybe they raid archaeologists' basements in the wee hours. I don't know. But people bought the heads, and eventually one broke and a skull was discovered. I'm sure Marcs took them off the shelves.
My point being: expect an adventure at Marcs. Maybe one with a happy ending: some good deals as long as you have cash or Discover! Maybe one with a sad ending: every now and then Eastgate Marcs goes months with no shopping baskets! (I know they get stolen, but are they really that expensive to keep on hand?)
Or maybe, just maybe, your extra-special Marcs adventure will end with an ancient human head to call your very own.