A standard tune up can cost $50 to $200, while more complex tasks can range from $500 to $900. This is one time cost only. This is taking into consideration the price of the parts and labor required to perform the work.
If you’re using your tuner in an effective way, you can save lot of money in long run directly or in-directly. So, buying a tuner is a fair ask and will give you lots of benefits only.