Applause! Applause! Good for you.  Piano lessons are good for you no matter what your age or where you are in life.  If you want to get the most from your money, here is good advice in the article, 5 Things Your Piano Teacher May Not Be Telling You. 

• You’re Not Practicing Enough
• You Need to be more consistent in your lesson attendance
• You should consider upgrading your keyboard or tuning your piano
• Your personal choice of music is not exactly helping your studies
• You’re amazing

Keeping your practice instrument in tune encourages practice, develops the musical ear, and extends the life of the instrument.