Jessup-based Elite Spice Inc. has purchased a 158,400-square-foot manufacturing building it was leasing after the building's landlord decided to put the building on the market. Elite Spice paid $12.9 million for the 12-year-old building at 7751 Waterloo Road, said Tom Whelan, who sold the building for Jessup Park LLC. The building was never really on the market, Whelan said, but was offered to Elite Spice after the landlord started receiving unsolicited offers. "The landlord had no intention to…