The accepted practice in the US is to receive bids for jobs not to offer a certain price.
I believe that is true for a lot of elsewhere as well
You will have a difficult time getting a valid answer here. [You don't even say what part of the world you are in.]
There are just too many potentially unknown variables.
Your best bet is still to contact locals and ask them for ballpark estimates.
Local people will be familiar with all of the local conditions that will greatly affect your costs and time for setup.