Take a look at lead, lead pot, goggles, hooks, weed guard, molds, paints, skirt material, etc. See how much the start up costs are then decide if or not you want to take the plunge.
There are some guys on this site (Cadman, and Mike at Seibert outdoors come to mind and maybe smalljaw) who would probably sell you heads (painted, unpainted, with or without weed guard). Then you can get some skirt material and make some jigs.