Steel, aluminum or brass ? Single or double cavity ? With or without handles ? It all makes a difference. Check E-bay and you will get a good idea. The older molds tend to bring a lot more money than the newer. Saeco usually sell for more than RCBS, RCBS usually sell for more than Lyman, customs sell for more than any of them , usually that is. More info. would really help but E-bay will give you a great idea---simply type in bullet mold in their search engine ---grab a cup of coffee and click away--you'll be there for awhile. Hope this helps.