The total value of the contract can be estimated by summing the prices of all items. However, since the prices are only good if all items are purchased together, we need to consider the total cost for each vendor. For Item No. 1, the prices are: $496.95, $546.95, $497.00. For Item No. 2, the prices are: $646.95, $696.95, $546.00, $979.99. For Item No. 3, the prices are: $396.95, $396.95, $338.00. For Item No. 4, the prices are: $251.95, $276.95, $238.00. For Item No. 5, the prices are: $29.95, $0.01, $26.00. Assuming all items are purchased from the lowest-priced vendor, the total cost would be: $497.00 + $546.00 + $338.00 + $238.00 + $26.00 = $1645.00. However, this is just an estimate, as the actual prices may vary depending on the vendor and the specific items purchased. Given the information provided, a reasonable estimate for the total contract value would be around $10,000 to $50,000, considering the prices of the items and the number of vendors involved.