i might conceivably spend a few hours trying to fix the sender unit, but no way would i spend more than 20-30 quid on a new one on a £200 car. If you want to spend some money on spare parts buy a spare fuel pump relay. then if the car mysteriously stops working for no obvious reason, you can swap the relay and hopefully get yourself going again. (you also need a couple of thin screwdrivers to change the relay, so make sure you have these too or you have no chance of swapping it, some people use cocktail sticks)

