Presentation and a doubt.

Hello everyone. My name is Fernando and I have a car upholstery workshop in Madrid. I also do audio facilities and touch electricity. I have the occasional knowledge of mechanics, although either to throw rockets. Anyway, I suppose that if I can contribute, it will be more than anything about how to disassemble some inner element without fucking it (which happens so many times ) or pijadas like that.
Well, the mess. I just changed the inside of an astra g three doors, except the dashboard and the floor. All with scrapping pieces (€ 360). I have thrown me 18 hours, curing in it, and another 10 in the drain disassembling the "donor" vehicle. The story is that they come out € 960, and, honestly, I don't know if it's too much or okay. I have recently been an entrepreneur, and that's why I doubt.
The list of pieces is as follows:

and
repair), central console, seats of/after., Panels of/after, door and gate rubber