Est. Cost (Parts + Labor) for new starter motor?

What is your question?

1996 Nissan Maxima GLE (164K miles) -- suddenly turned key and NOTHING happened -- battery was fine. Suspected starter problem, confirmed by my mechanic -- need new starter motor. Quoted $299 parts + $150 labor. Does this seem reasonable?

How long has your 1996 Nissan Maxima had this problem?

Yesterday 3/13/19 -- happened suddenly