No, no money was lost. The purchaser agreed to buy the DVD for $3,000 for delivery at a later date. That is a valid purchase agreement. Only if the seller guaranteed the price would never be dropped before release would you have a valid point.
How many times do we need to go over this very basic point? How come no one wants to take responsibility for their purchase decisions these days? Probably because they grew up playing games where no one lost, everyone was a winner.
I've been an advocate against that kind of child education for decades now. It looks like the results are starting to come in. People raised like that think it's their God-given right to get the best deal available, even if they made the purchase contract at a different point in time. My advice to these people: never start trading stocks, options, or bonds. You will always think someone is ripping you off, every time you don't get the best price of the year. Don't get me wrong, at any point in time, you deserve the best price currently available. However, a purchase at a different time has different considerations that affect the supply and demand and prices do not stay the same over time. They could go up or down, that's natural.
Traditional auto dealerships break this rule all the time by selling the same car with the same options at wildly different prices on the same day. "Walter" might pay $36,000 while "Marie" who came in at the same time but was working with a different car salesman, had paid $38,775 for the exact same car! That's not what's going on here because prices are fungible over time. Nothing stays the same forever.