The amounts to be paid for commissions, for one year, as auctioneers in this commonwealth, shall be as follows, viz.: For a commission of the first class, three thousand dollars. For a commission of the second class, two thousand dollars. For a commission of the third class, twelve hundred and fifty dollars. For a commission of the fourth class, seven hundred and fifty dollars. For a commission of the fifth class, two hundred dollars.
72 P.S. § 2885