The Filet Mignon which is a steak cut of beef which comes from the smaller end of the tenderloin of the cow.
Filet Mignon is French for Tender Fillet and you can only get 4 Filet Mignon meats from one cow so the Filet Mignon is not as easy to get so the cost of Filet Mignon is pretty expensive per pound costing around $14.00 per pound.
The Filet Mignon is a great tasting and very tender meat though so if you can get some you should as it makes for a great meal and also makes great stews.