I recently joined two Facebook groups that may be of interest to you. One is called Vintage Halloween and the other is Everything Fall. They both seem to be groups with an active participant base. I've found it to be a great way to see parts of many other collections. Education, especially with a hobby that can be pricey, like ours, is a must. Given the relatively high number of Ebay auctions I've seen end where newly made items have fetched sadly high prices, I'd encourage all prospective bidders to up their familiarity with truly vintage items. These two FB groups may be a good tool to add to your collective quivers!
Mark B. Ledenbach's vintage Halloween collectibles blog.