Baba, from 1908 established a threshold of dakshina (Donation) for those approaching him to cross.
A man too much attached to wealth is frightened at the demand for dakshina and does not approach Baba.
A person who is ready to pay dakshina shows his readiness to part with worldly things and may also be ready to part with his worldly avocations and attachments and thus be prepared for intense love towards and surrender to the Guru.
The love of the Guru is the one thing needed, for the Guru is the sole sadhana.
If one fully believes (the Guru Gita dicta) (1) that the Guru is an absolutely essential pre-requisite for one’s attaining Bliss (sukham) or wisdom (jnana) and to make sure that at death there will be no faltering or pain and (2) that a Guru would ensure success and happiness in life and a happy death with his help.
"I draw to Me, My man from far off or even across the seven Seas to Shirdi, like a sparrow with a string fastened to its feet"-Shirdi Sai Baba, Indian Spiritual Guru-God 