Kelly said any supermarket “that has good, clear price labelling is a friend of mine”.
On the other hand, some island supermarkets reliant on big shipments could be “packed with stuff” one week and “completely empty” the next.
“I’ve turned up at some and their shelves were totally empty,” he said, “but the flip side of that is obviously I get an afternoon off on the beach.”
Kelly said his life experiences over the last decade were also reflected in the show.
“It’s tracking someone who didn’t know what they wanted to do, has found something full of purpose, and now has come out the other side and is moving on to different things,” he told the BBC.
“It’s a bit of a life show as well as based around supermarkets.”