"Price is What You Pay, Value is What You Get". [1]
I could hypothetically buy an apple or an investment for $100 billion (if someone gave me the money). There could be any number of reasons for doing so, but those reasons don't change the fact that it's highly unlikely I will derive $100 billion or more in pleasure or return from that money.
On the other hand, if I can buy something cheap and I find it to be more enjoyable, or an investment returns more money, than expected, then the item was more valuable than what I had paid for it.