A high price doesn't always mean great caviar. If you've never had it, try a more affordable variety first instead of splurging on the costly (and not necessarily good) stuff.
Crémant is a sparkling wine made using the same process as champagne. It's not as bubbly, but it's half the price, and you can find a dry or sweet bottle to suit your palate.
Chilean sea bass was once adored for its buttery flavor, but economical and ecological-minded cooks are better off with cheaper, more sustainable species that aren't prone to overfishing.
Instead of splurging, it's easy to make chocolate strawberries at home, where you can guarantee they won't be mushy and soggy and you can try all sorts of chocolates and add-ins.
Crab legs take a lot of work to eat and may end up giving you a measly amount of meat for your trouble, so cooks on a budget who still want to indulge might want to try lump meat.