Collect data from websites

Hello, I have a small Match request - if you want to get something coded into a website and would like to have an idea about the price of this, can you help me? I have plans to open a web page and for this I need a robot / grabber or whatever it is called in medical language, my best example of such a [login to view URL] is where when you search for a home in a particular city, so come all the homes that are for sale on the market. That is coming Edc's own + external (nybolg, DanBolig, Home, etc.) My question is this: 1) Do you need permission of the websites you pull data from as but the forwards them on to their own web page when they click? 2) Should we have done a robot for each page you want to "borrow" data from? 3) Do you need some specific "fields" as you sort out the others side after about one's own? 4) Can you make it such that you have a system also simply join the new site? Have found an extension of joomla, I want it to run with, so that you have a title for one internal and one for external? The reason I used [login to view URL] was to tell my little idea with internal and external lookup. We want to make a job site and the job site must be created in joomla, have found a module I think can do what we want But the system we are looking for must be able to retrieve data from an X number of website both Danish and foreign. A website we would like to "borrow" data could be [login to view URL] When a visitor to the website, he chooses what country he comes from, and then we have "all" the jobs that may be from various job sites in the country. When we borrow data from another website, these are sorted by a few things Country city job category Job type (full, part-time) Salary (possibly) Qualifications (possibly) So that the visitor will click into whatever country they come from or want to apply for jobs in. From there, he chooses the job category (IT, doctor, policeman, salesman) he wants, whether it be full-time and as part-time as in [login to view URL] will all jobs matching his selection will apear. 1 Will the jobs created directly on our own side (our customers) 2 Next comes as the jobs that are external, and when they click on one of them, open the job in a new window, so we refer in principle, we dont copy from the external sites Would of course like to have a system that could do this regardless of whether we took the site a, b ​​or c, but I do not know whether to be created codes for each site or one system that works to all sites also if we put more sites in to the system in the future. Dont look at budget, just want the best offer for my project Hope it gave some clarity?