Greetings,
I have read Project Description & seen the attached screen shots, so basically you will provide us PSD design files in layers, our HTML developers can convert them into HTML/CSS bootstrap, I believe you would like to have responsive website? Based on what you have explained in your Project Description, it should not take more than 50 Man-Hours but it can be decreased or increased, after we discuss online, so please drop me a message thru' PMB to start further discussion because I cannot write much on this initial message bard due to characters limitation.
If you want, I can then also give you break down of tasks and Man-Hours, so you can see yourself how we are allocating the hours. The reason why, I am unable to give you precise estimate, because you mentioned that there are 30-40 pages with different length and images etc. and all these pages are not attached or explained.
Look forward to hearing from you.
Regards,
YK
LEADconcept