What are the strategies for quotations in a real time bidding platform?

If you are in a bidding stage. you should keep in mind the following strategies for quotation:

1) Study well the last three years prices up/down.

2) Time factor is more important. so, check the availablity of materials.

3) Previous strategies will guide you the prices will rise up or fall down.

4) Sources of materials wheather it is available locally or should be import from other country.

5) Ready available or should be fabricated.

6) duration of availabity.

7) Any kind of crisis or shortages of supply of materials.

8) Manpower criteria/strategies/crisis as well as avaialblity.

9) proper study of BOQ and justifcation before submission.