A lawyer or a law firm may sell or purchase a law practice, or an area of law practice, including good will, if the following conditions are satisfied:
(a) The entire practice, or the entire area of practice, is sold to one or more lawyers or law firms;
(b) The seller gives written notice to each of the seller's clients regarding:
(1) the proposed sale;
(2) the client's right to retain other counsel or to take possession of the file; and
(3) the fact that the client's consent to the transfer of the client's files will be presumed if the client does not take any action or does not otherwise object within ninety (90) days of receipt of the notice.
If a client cannot be given notice, that matter shall not be included in the sale and the sale otherwise shall be unaffected and the seller shall comply with the requirements of Rule 1.16 for withdrawal from representation.
(c) The fees charged clients shall not be increased by reason of the sale.