They're much less expensive than ordering full portions of all those different dishes would be. And most standard entrees are too big to stay interesting throughout anyway. If you've not had the experience of eating this way, try it. You might even ask the chef of your favorite place to assemble a degustation for you, even if it's not formally offered by the menu. You might start something new and good.
Prices are subject to change.
Victor's, Ritz-Carlton Hotel. The latter the chef's proprietary menu, differs from table to table on a given night. Portions are teeny, but you get enough to eat. This is just about the most unpredictable tasting menu around, with the most exotic ingredients. The tasting menu here started out as the offering for people at the chef's table in the kitchen.