Before you move the car (after it's been stood) open the bonnet and shine a torch down through the engine bay; that should give you a rough idea where the leak is.
People like National Tyres or Kwik Fit will probably get it on the ramps and advise you on what is leaking, maybe even give you a price. Come back here with your findings and people may be able to advise the best way forward. Dont commit to anything without a 2nd opinion.
Chris.