We made 18 doz black and whites this summer. Made out of luan plywood and they're costing us about $2.50/decoy. Not as realistic as Real Geese but I don't think it matters in the situations we'll be using them. PM me your email if you want pics or more details
A long time ago Storm (dmccoy1) told me "Decoys aren't made to look good to birds, they are made to get people to buy them." I've hunted over his sillos with success. I've also shot snows over homemade sock decoys and ducks over homemade foam decoys. I believe that more lifelike the better, but location is more important.