Here's a case study of the tripwire ebook. Our client is ApartmentSpecialists.co.nz - a brokerage selling apartments.
We set up their website to do two things
1 - split the buyers and sellers into separate pathways (funnels) through the website.
2 - persuade them to self-identify by offering an ebook to download.

The detailed case study is here for you to read.
http://creativeagencysecrets.com/testimonial-case-study-apartment-specialists/

I suggest you also visit their site and sign up to read the content we wrote - a lot will be transferable to Paris real estate.