Formal competitive bidding and informal competitive quotes shall not be required in the following cases:
(A) Where the subject of the contract is other than a public work or improvement and the product or material contracted for is not competitive in nature or no advantage to the village would result from requiring competitive bidding or informal competitive quotes and the Village Council by resolution authorizes execution of the contract without competitive bidding or competitive quotes;
(B) In the employment of professional services including, but not limited to medical, accounting, auditing, data processing, legal, planning, engineering and architectural and the Village Council by resolution authorizes execution of the contract without competitive bidding or competitive quotes;
(C) Where the scope of the work is not definitive and as a result a request for proposal is difficult to prepare and/or the cost of preparing the request for proposal is expected to exceed the cost of the contract and the Village Council, by resolution, authorizes execution of the contract without competitive bidding or competitive quotes;
(D) For purchases from or joint purchases with another unit of government;
(E) When the village elects to perform the work using village employees; and
(F) For purchases of supplies, equipment or contractual services, the estimated cost of which is less than 10% of the formal bid limit.