Most every place that sells them does list price. If you can find some one that even has any. As one sporting goods store owner told me, "No one around here hunts waterfowl they do deer and turkey". And just like every other place he doesn't carry non-tox shells but does have a fine selection of
.30 caliber rifle ammunition.
I've picked up a lot of used goose decoys off E-Bay (know the new price and don't bid above 1/2 of that) and new ones from Mack's Prairie Wings. Duck decoys I've gotten from Cabela's.