Development of a calculator of furniture

It is necessary to develop a calculator for the online store, which will calculate the cost of all furniture options (hallways, kitchens...). Let's look at the example of wardrobes. It will look something like this: on the page of the online store there is a button "Calculator of cabinets-coupe", when it came, the interior (for example, the hallway or nursery or you can change any), and a window pops up where you can consistently choose options:
- sq-coupe housing (series, color, size, internal filling);
- doors of the sq-coupe (number, profile colors, profile options, varieties by filling and combinations);
- additional elements (roof, corner extensions, boxes...);
All sorts of “lamps” (lamps...).
And in the process of selection, prices, colors, options are reflected.
As a result, a cabinet that can be twisted as 3D and which the client himself has assembled and can be ordered or edited immediately (a certain element can be changed in the calculator).
I am waiting for your offer at the estimated cost. No prepayment. Payment is divided by stages of work performed. I am not in a hurry, the main question is price / quality.
Example of calculator: Text hidden