‘ And Micah said to him, “Stay with me, and be to me a father and a priest, and I will give you ten pieces of silver a year, and a suit of clothing, and your keep.” '
This confirms that his religious aims were Yahwistic, and that he sought to conduct his worship in accordance with the Law as he saw it. Indeed he wanted further guidance from an expert who could direct him and guide him and fulfil priestly functions.
Ten pieces of silver, a suit of clothing and keep each year was probably a very satisfactory wage for such a position. Certainly the Levite thought so. The clothing may have been of a priestly nature, although such clothing may have been provided separately, along with the ephod, as belonging to his house of God. Strictly the Levite should have pointed out that he was not qualified to exercise priestly functions (unless of course he was of a priestly family) but he was not going to lose this opportunity over a mere trifle. His dishonesty and opportunism come out all the way through.