2000 Oldsmobile Alero Leaking

I spent 1200 in mid June of 2008 to fix the cooling system. They found the intake gaskets leaking and water pump leaking. They removed the intake manifold, both valve covers, replaced the intake manifold gaskets, both valve cover gaskets, all related gaskets and seals. Replaced the water pump, and serpentine drive belt.

It's now 4/30/08 and I noticed leaking and got an estimate. My estimate reads engine fluid leaks. oil pan and the front crank seal is leaking. estimate 740.00.

Question, is this related to my first repair about a year ago or unrelated and does this price sound appropriate for the Indianapolis, IN area?

Thanks