Try other outlets as well....eBay. Even Craigslist since you are in Florida and there are lotsa boats out there. I know there are some places that sell used props...they might buy them off of you...wholesale obviously. You know as well as I do how expensive those things are and those are good looking props.
Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B