sounds like 30k miles(or 30k*nmiles) maintanance,

change engine oil, oil filter,

change transmission oil and filter,

tune up including(but not limited):

change air filter, spark plug, distributor and wire.

I think 160usd is reasonable if all parts are included.

how many miles on your car? manual shift or auto?

and what car ist?

labor cost may vary upto your car, your location.