The three pictures linked above do not provide an adequate basis to evaluate the gun, so it would be almost impossible to give an estimate. Based on the condition I can see, I doubt it is a high dollar gun and that you would recover any restoration costs in a subsequent sale.

With respect to shipping, I use USPS. Contact Morphy's or Rock Island for shipping instructions. Double box the gun, and I get HDPE pipe insulation at Home Depot to wrap the barrels, so that they are not dented in transit. I usually spend about $40-50 on shipping per gun. Make sure you insure them.