Features of Hakodate are fresh fishes and foods.
Here is a famous market place of Hakodate.
Very close to JR Hakodate station.
So you can take a walk and reach there.
Here was a market for both citizen and travellers in 20th century.
But recentry, price will be up and I can't recommend to buy many here.
Of course, all things are cheaper than Sapporo city.
But there are some in Hakodate, cheaper than this morning market.
If you want to know "Special information" about shopping more cheaper, ask me
PR