Maybe I am reading too much into this but are the deals that some people stumble upon on eBay hurting the market value of sets? Since the calculated value is based upon eBay sales then this should be the case right? A recent example is the smoking deal that a member (over 50% off) got yesterday on a set due to the sellers listing error. That sale will probably hurt the value since not that many of that set being sold. Will stuff like this even itself out eventually? Am I making an issue out of nothing?

Stephen,

I don't see why it would be any different than real estate. If someone needs to move or the bank takes over a house and sells it below market value it pushes down prices for the neighborhood. A single sale however Does not an entire market make. I magine that would be true for lego sets as well.

This is a good point. Real estate also has people to advise on the price to sell at, no safety net for the Lego reseller that doesn't do their homework. Otherwise it could be very much intentional and they just want to move a product fast and they have their own variety of reasons.