Hey,
Your work seems simple, but I would like to know the detail of the panel you are visualizing. There can be many ways to implement this panel.
I can implement this for you as a web panel in which you can your dealers can login and post and show their work they have bought from you on-line. Then their customer can see their work and post a quote there for which you can either get an email, like this quote has been made for this dealer. or you can simply get informed on the same panel.
I can also make a prototype for you, to discuss the details of the project and develop it as perfectly as you require.
Hope to hear from you soon.
Regards,