changing oil is a piece of cake. Just find the oil drain plug, let the oil out, and then find the filter and screw it off and put the new one on. Make sure everything is tight and pour new oil. Maybe that 2-3 hundred service you were quoted included other things like a tune up triee roation, etc... This is prob the easiest maintenence you can do by yourself.

__________________
2001 E55

2001 E320 Sedan

2001 Subaru Legacy

2006 SLK280

2016 Subaru Outback 3.6