Rosen (1974) argued that goods could be treated as packages of characteristics and a comparison of market prices can be made by looking at the composition of the package of characteristics of the goods. Previous research on the variables affecting the price of equines sold at auction (predominantly yearlings) has focused mainly on the Thoroughbred sector. Variables found to be significant included month foaled (Buzby et al., 1994), sire progeny performance (O’Dochartaigh, 2004), racing performance of dams, sires and their progeny (Hastings, 1987) and the sex of the animal, (Robbins et al., 2001). Taylor et al., (2004) studied show quality Quarter horses and indicated that sale order also affected the price achieved. Only limited research on the variables affecting price at auction has been conducted on the sport horse sector. While Thoroughbreds are typically purchased with racing, breeding, or both in mind, sport horses may be aimed at a much more diverse range of equestrianism. However much less information tends to be available to prospective purchasers with regard to pedigree and performance details of the animals. The purpose of this study was to identify the variables, which might act as salient predictors of sport horse foal prices at auction.