Videographer to record client testimonials

Hi there, I run a digital marketing company that specialises in real estate. Visit [login to view URL] I'm looking for some help with a video for my own company. But working together could lead to more video production work as a service I offer to my clients also. My clients are real estate agents and are located in different places around Sydney. We help tell their brand story (in written form), produce weekly blogs, build websites, set up social media marketing programmes. I want your help in creating a video about my company and how its helped agents and agencies so far. I'd like to get my clients to tell my business story for me. How I have helped them with digital marketing, what I am like to work with and how they feel about the possibilities of where their business is heading now that we have their online marketing programs in place. I envisage that we'd need to organise a day together to visit the clients and record their testimonials. They are located in places like Castle Hill, Parramatta, Carlingford, Sydney City and Marrickville. Then obviously there’s the post-production. Could you give me an idea of how you work and what your costs might be, please? Could you also send me some examples of your work that relate most closely to what I am aiming to achieve? Thanks for your time in advance. Melanie