Always an interesting question which has raised it's head before. 25 years is a long time - what will your car, 32" Sony TV, Fridge Freezer etc be worth in 25 years? Absolutely nothing because they are consumable items, purchased for their use and enjoyment over a limited lifespan and not as investments for the future. That is the way I have always regarded my records....having said that I don't own any of the 'big ticket' sounds - if I did I may be more concerned for future values