Millionaire Peace Rules, whose retirement from racing was announced last week, will enter stud at Vinery's new Florida operation near Ocala. His fee will be $15,000.The Cliff's Edge, a millionaire who was retired after suffering a leg injury in the Oct. 2 Jockey Club Gold Cup (gr. I) at Belmont Park, will stand for $20,000 at Vinery near Lexington. The Cliff's Edge will stand as the property of Vinery and Robert LaPenta, who raced the colt.Peace Rules was retired following the discovery of a filling in his left front leg. The 4-year-old son of Jules out of the Hold Your Peace mare Hold to Fashion won nine of 19 starts and earned $3,084,278. He scored grade I wins in last year's Haskell Invitational Handicap and Toyota Blue Grass Stakes and this year's Suburban Handicap.The Cliff's Edge underwent successful surgery two days after the Gold Cup at the New Jersey Equine Clinic. The 3-year-old son of Gulch out of the Danzig mare Zigember suffered a displaced condylar fracture of the right front leg, which required three screws. "He has an excellent prognosis for breeding," said veterinarian Patricia Hogan.The Cliff's Edge retired with four wins from 13 starts and earnings of $1,265,258. His big win came in this year's Toyota Blue Grass Stakes (gr. I).