As a collector of a wide variety items from small toys to collector cars, I still have yet to see any price guides that do not listed hugely inflated values compared to what the market place bears. In most of these guides, the values are based on the "alledged" asking and sales prices, the guide rarely ask for any kind of verification. Based on my years of experience dealing with collectibles, I would very much lean towards the prices paid on eBay to determine the true value of an item, not a price guide.The market prices guides that I would use to defend my argument that the items are valued at $1400, are published based upon extensive market sales research and have been the expert in this market for 20+ years. Would that still be considered speculative?
The only reason these price guides show these highly inflated values is a matter of economics, they want to sell their books. How do you sell books like this? Make the customers happy. How do you make the customers happy you ask? Make them think the crap they are collecting is worth a whole lot more than it really is. Joe Bob Collector gets a nut off each month when he gets his latest price guide. Your auction experience is a perfect example of why these price guides are useless. I would bet the seller would take a couple hundred bucks for the items if you offered it.