Done right you can make your own for around $8 to $10 a decoy if you are only making small batches. If you make bigger runs of deeks you can drop that down to $5 a decoy in materials. That of course is assuming you call the head and body mold paid off after the first couple of dozen decoys. The real cost in the decoys is in time and effort.
I would highly reccomend that anyone who wants to try it pm me with questions. I am happy to help folks out. If your serious about moving foward I have been known to send a body and head casting, along with a keel piece for folks to give it a run. That doesn't mean every guy on here hops on and says me, me, me!
I am going to be casting heads this next week. My new order of EPS for body molding should be in so I can start casting scoter bodies the following week. I could cast a few teal or small puddler bodies in that process. I have a few extra heads for those bodies left over from my last run of casting. That would give a couple of guys that are interested in pursuing the hobby a trial run.