In the Bible, salvation is free (Eph 2:8-9)
Being used by God (after salvation), in effective spiritual anointed ministry to win others, honestly is costly.
The oil in the Bible that was used to anoint the priests was costly.
This is a picture of (1) the price paid by Christ at the cross as He laid down His life, and (2) the voluntarily choose to loose our "life" for His eternal purpose, and experience the Anointing in an ever fresh way.
When you loose time, maybe career ambitions, and your reputation, just realize this, the Anointing of the Holy Spirit which dwells in you (Rom 8:9) is now working through you, and He is starting to use you.
The gain in terms of eternal rewards, and true joy, can't be compared.
Anointed evangelism is about loosing, and then we gain.