From a valuation perspective, United Parcel Service (UPS) is not attractive. UPS is trading at a forward price/earnings of 15.1x, higher than the industry's average of 14.3x and 40% above its five-year low.Image Source: Zacks Investment ResearchThis Atlanta-based package delivery company’s valuation compares unfavorably with that of rival FedEx (FDX) . FDX is currently trading at a forward price/earnings of 13.2x.UPS’ expensive valuation is anything but attractive for investors. Should they be wary of inves ...