Your friend has a retail store and he is trying to sell these extra items here in classifieds, which isn't allowed. According to the sticky at the top of the classifieds:
Absolutely no commercial, retailer or vendor ads nor buying products for the purpose to resell will not be conducted anywhere on HomeBrewTalk without being a registered Advertiser regardless of company size, maturity or profit margin.
Classifieds is for the selling of old equipment, excess ingredients (that you do not grow or purchase to resell) and other non-vendor related and non-commercial related items.
This is not a place to test possible business ventures either.
Your friend is welcome to become a vendor at HBT to sell his store's pots. If he would like to do so, take a look at this link http://www.homebrewtalk.com/advertisers/