That's a hard uestion to answer without seeing pics of the item. also you would have take in to account what type of paintjob it has.the state of the prop, how complete is it etc,etc.
your best bet is to post pics of it and have a complete description and note if it has any scuff marks,cracks ,missing parts and so on . the resin 1:1 preds usually range from 3500 dls to 8000dls depedning on the seller. I personally would never pay more than 5000 dls for one,hope to see pics soon!