John most smiths in the states that do a decent job charge from $300 up. I've found cheaper but they never have good contrast. I now send mine to England. With shipping and browning it's running $150. They have to come back through an exporter according to the smith that's doing mine. I already use an exporter and just have him add them to my shipments. You might be able to do it yourself but with the time, equipment, and chemicals for 1 or 2 sets it's cheaper to have someone else do it.