Any idea of the cost of getting them to put these in?

Please update when you decide as I'm interested in getting a parking sensor and reverse camera in mine and don't even know where to start.

Over a month ago now I purchased my Bongo and the sellers notified me that the leisure battery needed replacing. So off I went to GSF and they told me that the only leisure battery that matched my Ford Freda 2ltr petrol is the one in the photo below. So I bought it and put it in and it has been good...