Development of custom Joomla extension

Dear developers, For one of our websites we need to have an online quoting extension for Joomla developed. If work is delivered well, we will have several other projects on a short term. Short explanation for this project: Context: - The website already exists and is online except for this part - Design looks like [login to view URL], the right_bottom part now needs to be developed What is it? - A translation agency that wants to offer online price calculation + PDF quote sending online - Pricing will be determined on different variables, not to complex, we have all schemes ready - Upon selecting the variables and clicking 'Calculate price' the price has to show in the same field, and also - A number of fields (gender, name, company name, e-mail addres, optional phone number) to request PDF-quote - If the PDF quote is requested a PDF needs to be automatically send to the e-mail address - The PDF contains static content + project information selected by the client based on the form input - If the PDF quote is requested, it is sent and client is redirected to a new page - This pages offers a call-me-back form or the option to directly send the files and confirm the order - No online payment system is required, after order confirmation the follow-up is provided personally - The back-end needs to show reporting analysis on several KPI's Good to know: - Upon starting you will receive a full project briefing with a thorough explanation of all requirements - Although we're not developers, we do have technical knowledge, makes communicating easy - We're pretty much online all the time, different time zones is not a problem - Although we're a Dutch company, the tool can be created in English with translation options to other languages Please inform us of: - Your first indication of a time investment, we know it will be a rough indication - Your hourly rate and/or fixed fee proposal - If available, extensions you've created in the same category We're looking forward to your replies and will inform every applicant personally of our decision. Best regards, Dennis