Clean up the area as best as you can to help you determine the source of the leak. It could be a camshaft seals or the crankshaft seal leaking which is a lot less work. The labor for an oil pump removal and resealing is expensive because the oil pan has to come off. To get the oil pan off, you have to remove the front differential.

Even if you do determine the leak is coming from the oil pump, is the leak really bad? How much oil do you have to add over a 5,000 mile interval? If it's not that bad, you could just live with it. Oil is affordable. The oil leak can be messy, but if money is tight, deal with the mess.