The real caviar that is expensive does have a taste that some people love while other people hate.
For example Sturgeon caviar has a fishy, salty taste and an unusual mouth feel to it and some people enjoy that taste while others hate it.
I once tried the Sturgeon caviar when I went out to eat with a more wealthy relative and I couldn't get it down my throat while my rich relative loved it.
I would certainly not pay for any Caviar but if you've had other types of Caviar but not Sturgeon Caviar then the other Caviar types may not have a taste to them while the Sturgeon Caviar and a few other types do have a taste that can either be good or bad.
To me though no matter how good the Caviar tastes I still wouldn't pay the prices they want for it.