Create a form for a WordPress site

Hi, need somebody who can code a form, like this one: [login to view URL] Zentrale My form will be very similar to this one, For the calculation of the price you can use this one. But these are the differences: 1) Take care, there are two main branches available on the second site, we will only need the first (left) option (Umzug des ganzen Hauses) 2) The date picker on the first site offers three options with different price levels. (red, yellow, green) That will not be necessary. 3) Please consider: Some of the fields cause a multiplication, others an addition. E. g. you have a basic price defined per square meter and whether the location is on the first floor or on the second floor or the 10th floor, this basic price will be multiplied by a certain number. Other fields cause an addition. There are logical conditions and the form is divided into several parts. --- I need three prices: 1) Plugin version: You use one of the WP plugins that offer conditional logic and splits the form into parts. Which plugin you will use? Will it be for free or do I have to buy the plugin? 2) Hardcoded version: You code it into a template and therefore anybody who wants to change the form needs to understand the code. Which language do you want to use? Javascript or jQuery might be OK. What do you think of that? 3) Personal Plugin: You code it into a personal plugin that can be managed by the site owner. He can change the prices in the backend. He can also change the numbers that are used within the multiplications. This will be the most expensive version, but the easiest to use. How much would that version cost? Thanks for your answers. Please remember that I am not looking for the cheapest price, but for the project that works best.