Please don't get carried by the comment posted by Molten Metal. The person must always be the first to comment on each post everyday as you can see for yourself and most of the comments are writing just for the sake of writing, misguides and misinformation. This has been going on for several years now.
There are two places where you could get the item you need. One is from the dealers. Second, you just may be able to find the seats from the place where they sell spare parts of vehicles that have met with accidents, were badly damaged and written-off. Contact some garages in the industrial area and they will either get them for you and fix them, or guide you to the place where the item could be available.