1999 Range Rover oil leak

I am thinking about purchasing a used 1999 range rover with 112k miles. There is nothing wrong with it except there is a oil leak. There seems to be oil drips under the engine on the pavement. I looked under the hood and there seems to be oil leaking from the side of the engine based on residue i've seen. Could this be a seal? Ive read these car are prone to oil leaks since the Brits have not yet mastered it. I understand fixing a land rover can be expensive. Do you have any suggestions on what I should check to try to determine if this could be a issue costing a couple hundred to fix or much more than that. Really do love the truck but dont want to take on another persons problems.