Listen - there is only one gasket that costs $1,000 to replace at a dealership and that's the headgasket - which leaks coolant and oil.
$1,000 for an oil pan gasket and plugs/plug gasket, wow. If you can visually spot where the leak is coming from, we can fix you. An oil pan gasket is something to the tune of $30.
The only gaskets that can leak oil really are the oil pan gasket, the oil filter housing gasket, valve cover gaskets, timing cover gaskets, and front and rear main seal, and that's about it! If it were a rear main seal, I could see that being expensive but thats a transmission removal etc. I dunno man, sounds like you got "took".