I would get amounts from ebay when possible on the items that are no longer available or are PM. Go with a high-end estimate, since prices on ebay fluctuate and you want to insure at the highest rate possible to make sure that you could replace the collection if something happened. For the items that you can't find on ebay, I would go with Meg's Guide original prices and add a bit to the price if the outfit is retired. Be sure you take photos of all the stuff you are insuring, becuase they require that to collect. I personally have a MS database of all the items in my collection and their current (high-end) value. I'm working on the photos...