The Vampire is not a Blizzard or Apollo 1260. By this I simply mean that old and out of production hardware will always be objects of desire to collectors. They're priced high because they are rare and original 1990's hardware with real Motorola CPU's.
Even if the Vampire exceeded the 68060 performance by a factor of 1,000,000 times, it still wouldn't affect the cost of those original 68060 cards in todays second hand market. The Vampire market and the 'authentically classic' market can and will co-exist together.
Vampire is a great product without a shadow of a doubt, I hope it will take the Amiga forwards onto great things.