To a certain extent the cost will depend on you and how pretty you want it and what you already have on hand or can get cheap in your area. The coop is important to have secure but sometimes you can find 2nd hand materials or make one from some of what you already have.
I use tall grassy weeds pulled from my garden for some of the bedding in the spring to cut down on cost. During the winter I have rain barrels collect the pond water (clean garbage cans sitting under the drip line). My ducks can free range during the day to eat bugs/dandelions and what not. I have layer ducks and they lay beautiful large eggs almost every day of the year. I also sell a few duck eggs to a friend with allergies. I do tons of baking with the eggs I do keep. For me I would say I am saving money having the ducks (eggs) but I did have a lot available cheap or free to start my coop/ yard. Also my coop is not really the prettiest, something I continue to work at slowly improving the set up. I will say that chickens I have had in the past were cheaper on a day to day cost. Nontheless I love my messy, mud making, food gobbling ducks better!
I use tall grassy weeds pulled from my garden for some of the bedding in the spring to cut down on cost. During the winter I have rain barrels collect the pond water (clean garbage cans sitting under the drip line). My ducks can free range during the day to eat bugs/dandelions and what not. I have layer ducks and they lay beautiful large eggs almost every day of the year. I also sell a few duck eggs to a friend with allergies. I do tons of baking with the eggs I do keep. For me I would say I am saving money having the ducks (eggs) but I did have a lot available cheap or free to start my coop/ yard. Also my coop is not really the prettiest, something I continue to work at slowly improving the set up. I will say that chickens I have had in the past were cheaper on a day to day cost. Nontheless I love my messy, mud making, food gobbling ducks better!