I was under the impression that you could filter out their marketplace sellers and that they didn't commingle their own inventory with anyone else's. Is that no

I was under the impression that you could filter out their marketplace sellers and that they didn't commingle their own inventory with anyone else's. Is that not the case? Where do you go for computer stuff that you can trust these days? Every box in all the Fry's stores around me all seem to have already been opened and returned twice by the time i see them.