The answer depends on the extent of customisation that you want. There are ways to customise the car interior sets without costing much like a dashboard cover, which will only cost you around a hundred dirhams. But if you want to customise the seat cover, install a carbon fibre racing steering wheel, and top it off with a custom-fitted dashboard, it is going to cost you an arm and a leg. So, customising car interiors can be as costly as you make it. There is no upper limit to it. If you are worried about the cost of customisation, you can look for cheap car interior sets online in Dubai.