Yeah this is the part I also don't quite understand. What they may do is: Order items that aren't as perishable such alcohol & ice cream (e.g. Ben & Jerries)

Yeah this is the part I also don't quite understand. What they may do is: Order items that aren't as perishable such alcohol & ice cream (e.g. Ben & Jerries) and then resell those via partner off-license shops.