Bulgaria's defence ministry said it has accepted the offer of the sole bidder in its tender for ensuring the airworthiness of the country's Su-25 fighter-bombers even though the price is more than triple the estimated value of the procurement set in the tender documents. The ministry has ranked first the sole bid submitted by Belarus' Aircraft Repair Plant 558 valued at 73.7 million euro, the defence ministry said in a statement on Tuesday. The estimated value of the procurement order for the overhaul of 14 Russian-made Su-25K jets, including two trainer aircraft, was set at 41 million levs ($23.9 million/21 million euro) in the tender documents. The offered price exceeds the estimated value of the procurement order but this is not a reason to reject the bid, the ministry said. The initial offer submitted by Aircraft Repair Plant 558 was priced at 132.5 million euro but the price was lowered in the course of negotiations, the ministry said.