creation form with conditional logic for joomla

hello to all. I need a programmer to realize my project form. I am attaching a demo site for you. [login to view URL] [login to view URL] fields are very similar. I wish I could develop on 2 product categories iPhone and iPad. in Annex I developed all the logical conditions. I would like someone who can implement this for me for my website developed with Joomla. Also, since I'm supposed to change prices monthly, I wish it was simple enough for me to do. thanks