The total value of the contract can be estimated by summing up the bids from all the vendors. However, since the exact contract values for each vendor are not provided, we can only estimate the total value based on the bids listed. The total bid value for the first vendor, Adorama, is approximately $62,000. The total bid value for the second vendor, Diltex, is approximately $43,000. The total bid value for the third vendor, HPI International, is approximately $54,000. The total bid value for the fourth vendor, Natix, is approximately $51,000. The total bid value for the fifth vendor, PC Solutions, is approximately $33,000. The total bid value for the sixth vendor, PEMG Inc, is approximately $43,000. The total bid value for the seventh vendor, Taborda, is approximately $39,000. The total bid value for the eighth vendor, Advanced Digital, is approximately $40,000. The total bid value for the ninth vendor, Leepopo Corp, is approximately $46,000. The total bid value for the tenth vendor, Aventis Systems, is approximately $49,000. The total bid value for the eleventh vendor, Aviate Enterprises, is approximately $40,000. The total bid value for the twelfth vendor, EPKO Supplies, is approximately $20,000. Based on these estimates, the total contract value could be around $500,000 to $600,000. However, please note that this is a rough estimate and the actual contract value may be different.