Based on the bid prices provided by the vendors, the total cost of the contract can be estimated. Earle Asphalt Company bid $562,500 for item 1, $150,000 for item 2, $30,000 for item 2a, $120,000 for item 3, and $150,000 for item 4, totaling $912,500. Fiore Paving Co., Inc. bid $515,625 for item 1, $135,000 for item 2, $35,700 for item 2a, $150,000 for item 3, and $240,000 for item 4, totaling $1,081,325. River Front Recycling & Aggregate, LLC bid $525,000 for item 1, $150,000 for item 2, $30,000 for item 2a, $135,000 for item 3, and $180,000 for item 4, totaling $920,000. The total cost of the contract is estimated to be around $1.5 million, considering the bids from all three vendors.