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Jason LI'm sure he's perfectly friendly. I didn't stay in one spot too long, since it's a challenging chore to keep my young sons' hands off the table displays once we stop and look at something! 
The lack of marked prices is hard to interpret.
I probably shouldn't, but I usually assume that means the person isn't as open for business as one who has marked prices on his cards.
do others agree, or is this my own personal neurosis that I need to overcome?