Urban Herb Garden on the Cheap Concrete cinder blocks are $1.09 a block; the herbs were $1.50 a piece at the Eastern Market. A complete herb garden for $21.00! And, it is even dog approved. It is finally summer in Michigan, despite last weekend's bizarre hailing and random snow shower. Paul and I took a trip down the Detroit's Eastern Market to buy flowers for the pots and get the herbs for my herb garden.